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LAST GASP OR CROSSING THE CHASM? THE CASE OF THE CARBURETOR TECHNOLOGICAL DISCONTINUITY
Nathan R. Furr*Marriott School of Management
Brigham Young UniversityProvo, UT
Tel: (801) 422-1814e-mail: [email protected]
Daniel C. SnowMarriott School of Management
Brigham Young UniversityProvo, UT
Tel: (801) 422-2409e-mail: [email protected]
Aug 15, 2012
Under review at Strategic Management Journal
Keywords: technology strategy; strategic change; strategic renewal; industry evolution; technology evolution
*Authors listed in alphabetical order
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Although technological discontinuities are often described in terms of a rapid transition from one technological generation to the next, we reexamine this conclusion in light of the tendency of technology to experience a last gasp—a sudden leap in performance—when threatened. Although the last gasp pattern has been suggested in prior research, it has not been sufficiently explored empirically. In this paper, we attempt to validate the presence of a last gasp and also suggest the sources of such a last gasp beyond prior explanations that incumbents simply try harder. Specifically, we explore how incumbent technology choices influence the emergence of a last gasp as well as the impact of the last gasp on the technological discontinuity and incumbent performance. We test these assumptions among the full population of carburetor manufacturers during a technological discontinuity as the industry transitioned to electronic fuel injection. We find evidence of a last gasp but, contrary to prior assumptions that the last gasp comes from incumbents ‘trying harder,’ we find a much more nuanced story of why extant technologies demonstrate a sudden performance leap. More importantly, we observe a unique pattern of incumbents exploring hybrid technologies that both contribute to the last gasp but also form the bridge for incumbents to cross to the next technical generation. These findings contribute to the technology strategy, innovation, and organization change literatures.
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INTRODUCTION
Firms face many strategic threats, but technological discontinuities
are some of the most profoundly challenging. In the canonical description of
technology discontinuities, existing firms respond rigidly to such technology
changes and are swept aside, sometimes even blindsided, by new
generations of technology (Christensen and Bower, 1996; Henderson and
Clark, 1990). However, firms face significant uncertainty in the technology
contests that constitute the transition from one technical generation to the
next, and their outcomes are not always certain (Adner and Kapoor, 2012).
For example, although some industry observers predicted that hybrid
electric vehicles would replace the more inefficient combustion engine,
when threatened by the new technology, automobile manufacturers
managed to squeeze so much extra fuel efficiency from the seemingly
technically exhausted combustion engine that advantage of hybrid vehicles
over ‘old’ technologies may be in question (Naughton, 2012). Similarly,
although silicon semiconductors have been threatened for decades by
gallium arsenide, silicon semiconductor firms have somehow improved
performance of the ‘old’ technology enough to defer the threat, even though
silicon seems to have exhausted the very limits of its capability. In each of
these cases, in the face of a threat, incumbent actions improved the
technical trajectory of an older technology and allowed incumbents to
collectively stop, or at least significantly delay, a threatening technology
transition.
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The observation that incumbents often fight back raises significant
questions for the study of technology discontinuities. For instance, existing
literature highlights the tendency of firms to focus on existing technology
when threatened by a technical transition (Benner and Tushman, 2002;
Gilbert, 2005; Tripsas and Gavetti, 2000). According to this view,
incumbents focus on their existing technology because they are constrained
by capability, resource, and cognitive inertia that limits their willingness
and ability to respond to a threatening technology by leaping to the next
generation (Rosenbloom, 2000; Sull, Tedlow, and Rosenbloom, 1997;
Tripsas, 1997b). While certainly an accurate description in many respects,
such ex post observations have led many to conclude that incumbent efforts
in extant technology are the death throes of rigid incumbents. Yet there
may be rational reasons, ex ante, that incumbents focus on their existing
technology beyond the traditional capability, cognition, and market power
explanations. Namely, in the light of uncertainty before a technology
transition occurs, incumbents fight back because, as in all previous threats
they have faced and beaten back, they expect that their actions will affect
the technology trajectory and, thus, their survival chances.
Indeed, early observers of technology transitions noted not only the
tendency of incumbents to fight back, but also the surprising effects such
actions have on seemingly exhausted technologies. For example, in
observing technology transitions, such as the shift from ice harvesting to
mechanical refrigeration or from sailing ships to steam ships, researchers
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have observed that not only do firms fight back (Harley, 1988; Utterback,
1996), but that rather than inducing irrelevant inertial efforts, such threats
‘appear to induce vigorous and imaginative responses’ (Rosenberg, 1976:
205). Researchers have suggested that incumbent actions lead to an
unexpected improvement in the rate of performance improvement—a ‘last
gasp’—that reshapes the technology trajectory (Foster, 1986; Henderson,
1995; Tripsas, 1997b). Such a last gasp can have significant implications for
firm and industry evolution and, more importantly, an incumbent’s
interpretations of their actions in the face of threat. In cases such as the
silicon semiconductor or even the incandescent lightbulb, a last gasp may
forestall competitors for decades or even indefinitely. The last gasp is not a
panacea, however, as it may provide incumbents false hope that by fighting
they can improve their technology sufficiently to defeat a threatening
technology, leading to the observations of inertia and failure previously
described in the literature.
Therefore, the last gasp has important strategic implications for
incumbents, shaping whether and when incumbents should respond to a
technology threat—whether to fight a new threat, retreat from a threat, or
leap to the next generation (Adner and Snow, 2010c). In this paper, we
attempt to answer questions related to the last gasp that affect incumbent
strategic responses to a technology threat. First, although the last gasp may
has been suggested by several technology and strategy scholars (Adner et
al., 2012; Henderson, 1995; Tripsas, 1997b), the phenomenon of a last gasp
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has received little empirical validation. Second, we know relatively little
about the sources of the last gasp, other than suggestions that, when
threatened, incumbents simply try harder (Utterback, 1996). Finally, there
has been limited attention to the performance implications of the last gasp:
both at the level of the technology trajectory and the level of the firm. We
attempt to address these gaps by examining a technology transition at the
time of threat and, using a data rich industry setting, provide some
quantitative validation of a last gasp. Third, beyond the existing explanation
that last gasps are the result of simply trying harder, we suggest two
additional sources of a potential last gasp. Specifically, we hypothesize that
firms take many actions—efforts to innovate, reconfigure, and recombine—
that improve the existing technological trajectory and lead to a last gasp of
technology performance. Finally, we conduct an exploratory analysis to
examine the performance implications of a last gasp, both at the industry
level, by estimating the effect of a last gasp on a technology transition, and
at the firm level, by examining the effect of technology choices on
incumbent survival.
We examine these questions quantitatively in a unique data set
capturing the population of passenger automobile carburetor manufacturers
over two decades during which incumbents were threatened by a new
substitute technology—electronic fuel injection (EFI). Carburetors represent
an ideal setting in which to test the tendency and effects of incumbent
efforts to fight a threat because carburetor manufacturers had been
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threatened by potential replacement technologies in the past, but
incumbent efforts had forestalled a technology transition (carburetors had
prevailed against wick carburetors, the rotating brush carburetors, catalytic
carburetors, vaporizers, and mechanical fuel injectors, among others). EFI
technologies posed an uncertain threat because of their high cost and
delicate nature, leading many carburetor manufacturers to fight back,
which allows us to observe the relationship between incumbent actions and
any potential last gasp. In addition, because we have detailed data on a
critical carburetor performance indicator, we can observe the effect of
incumbent actions on the technology trajectory.
In the empirical analysis, we find that incumbents were surprisingly
vigorous in their response to the threat of EFI, leading to a significant last
gasp—a sudden leap in performance that does not match the canonical S-
curve of technology evolution (Foster, 1986). While prior literature has
observed this pattern qualitatively, we provide one of the first, robust
empirical validations of this phenomenon. Furthermore, whereas prior
literature has largely ignored what incumbent actions contribute to a last
gasp (suggesting that the last gasp results from simply ‘trying harder’), we
observe that trying harder contributes to the last gasp in only a subset of
cases. Instead, the combined efforts of innovation, reconfiguration, and
recombination contribute to the last gasp, but in ways that depend on the
technology choices of individual firms. Finally, we provide some of the first
empirical validation of the performance implications of a last gasp. At the
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industry level, we estimate the rate of substitution of EFI versus
carburetors and find results that suggest the carburetor’s last gasp deferred
the EFI’s eventual victory by approximately two years. At the firm level, we
find that the technology choices made by individual incumbents reshape the
type of ‘last gasp’ they experience and also their survival chances.
Specifically, while no incumbents made the leap directly to EFI, a subset of
incumbents engaged in a unique type of action: the creation of a hybrid
between the old and new technical generation. Although prior literature has
suggested such hybrids may be a manifestation of organizational
dysfunction (Christensen et al., 1996; Tripsas, 1997b), we find that hybrids
both make a significant contribution to the last gasp and, at least in the case
of EFI, may act as a stepping stone for surviving the technological
discontinuity. In fact, only firms that focused primarily on hybrids actually
survived to the next technical generation.
These results have significant implications for our theories of strategy
and organization in technology settings. First, we provide evidence of a last
gasp, which contributes to the enrichment of our understanding of industry
and technology evolution (Adner et al., 2012; Anderson and Tushman, 1990;
Henderson, 1995). Second, by showing how a broader range of incumbent
responses contribute to the last gasp, we enrich the growing body of
research on incumbent responses to technology threat, showing a
multiplicity of important incumbent actions in the face of threat that affect
competition and survival (Agarwal and Gort, 2002; Hill and Rothaermel,
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2003; Lavie, 2006; Tripsas, 2009). Third, in providing some of the first
detailed evidence of how the last gasp affects firm and industry
performance, we enrich our understanding of technology strategy. By
showing how a last gasp can defer a technology transition, we move beyond
the observation that technology transitions can take time, to highlight
specific innovation dynamics that affect the nature and timing of incumbent
responses (Adner et al., 2012; Adner et al., 2010c; Cohen and Tripsas, 2012;
Eggers, 2012; Henderson, 1995). Furthermore, by showing the crucial role
hybrids played in leaping to the next generation, we help resolve a debate
in the literature about hybrids while suggesting rich avenues for future
research. Indeed, hybrids represent an understudied but potentially
important artifact during eras of ferment, in industries that can
accommodate hybrids. Finally, this research helps recharacterize the
stereotype of inertial incumbents, demonstrating vigorous incumbent
responses that illustrate another reason that incumbents fight back in
addition to existing capability and cognitive explanations—namely, their
actions have an effect.
THEORY
Although the organization and strategy literatures address issues of
change and renewal (Agarwal and Helfat, 2009; Brown and Eisenhardt,
1997; Eisenhardt and Martin, 2000), responding to technological
discontinuities represents one of the most challenging events in the life of a
firm (Gilbert, 2006; Lavie, 2006). When such threats emerge, prior research
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suggests that incumbents focus on existing technology because of cognitive
(Gilbert, 2005; Kaplan, Murray, and Henderson, 2003; Tripsas et al., 2000)
and capability inertia (Benner, 2009; Christensen et al., 1996; Thomke and
Kuemmerle, 2002). While such observations are often accurate, the rigidity
explanation has largely led to the dismissal of incumbent actions as doomed
and irrelevant.
However, incumbent efforts focusing on extant technology may not
always be irrelevant. Indeed, rigidity interpretations are often made ex post
a technology transition and, therefore, overlook the fact that ex ante
technology transitions are often characterized by significant uncertainty.
The emergence of a threatening technology, promising though it may be, is
not guaranteed to spell the end of the old technology for many reasons
(Adner and Kapoor, 2010a; Rosenkopf and Tushman, 1998). First, it is often
unclear whether the technology can overcome the associated technology
risks to become a viable substitute (Adner et al., 2010a). For example,
consider home-sized nuclear power plants from the 1950s or turbine-
powered cars of the 1960s, which promised to outperform existing
technologies but failed to do so. Second, even when technologies do
materialize, they often do not cross the price/performance threshold to
displace extant technology (Anderson et al., 1990). For example, consider
composite airframes pioneered (at vast expense) in the 1970s that are just
today becoming economically viable substitutes for aluminum ones. Finally,
even when technology transitions do begin to occur, there are often
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questions of which market niches will be replaced and which will be left
untouched. For example, consider the parallel operation of hybrid and
combustion engines for well over a decade or the parallel existence of
online media portals and newspapers as customer niches retain their
preference for one technology over another (Adner and Snow, 2010d).
In light of such uncertainty before a transition occurs, when
threatened, incumbents may also choose to focus on extant technology
because they believe they can defer or even defeat the threat. Indeed, prior
observers have noted that when threatened, the trajectory of an extant
technology can exhibit a surprising and unexpected leap in performance
uncharacteristic of the traditional S-curve pattern described in prior
literature (Utterback, 1996). In many ways, it would seem surprising that
incumbents investing in extant technology late in the life of the technology
could make many improvements in the technology itself. According to the
basic principles of technology evolution, a technology’s performance
evolves according to an S-curve pattern as efforts to improve a given
technology are eventually exhausted, leading to a decline in the rate of
technical improvement (Dosi, 1982; Foster, 1986). The S-curve pattern of
evolution is driven as much by the exhaustion of the technology as by the
nature of competition itself, as firms locked in intense competition along a
technology trajectory near its zenith should have competed away any
innovation and performance advantages (Barney, 1986; Porter, 1980;
Rumelt, 1984).
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Nonetheless, economic historians and innovation scholars have
observed such surprising leaps in sailing ships (Gilfillan, 1935; Harley,
1988), typesetters (Tripsas, 2008), semiconductor equipment (Henderson,
1995), alkali (Rothwell and Zegveld, 1985), and ice harvesting (Utterback,
1996), labeling such unexpected leaps ‘last gasps.’ For example, both
Tripsas (2008) and Henderson (1995) qualitatively observed that
incumbents were able to extend the life of extant technologies in surprising
ways before a technological discontinuity and even afterward. Modern
examples of technologies exhibiting a performance improvement that
extends their life include CISC processor architecture, incandescent
lightbulbs, steel bicycle frame materials, coronary artery bypass graft
(CABG) surgery, silicon semiconductors, and many other technologies that
appear to exhibit a sudden burst in performance when threatened. Although
last gasps have been qualitatively observed across many industries, rarely
have they received significant empirical validation. Therefore, we
hypothesize that when threatened by a new technology, the technical
trajectory of an industry may exhibit a last gasp, or sudden leap in
performance beyond the expected technology trajectory improvement rate.
Hypothesis 1 (H1): When threatened by a new technology generation,
the technology trajectory of an existing technology may exhibit a last
gasp (a sudden increase in product performance in excess of existing
technology trajectory).
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There may be many reasons for a last gasp, although the predominant
explanation to date has been that when threatened, incumbents simply ‘try
harder,’ leading to an unexpected leap in the technology trajectory. While
such a performance leap may seem counterintuitive from the competitive
and technology evolution standpoints, there are both economic and
organizational reasons for incumbents to try harder. From an economic
perspective, incumbents locked in fierce competition at the margin may
have little incentive to invest in improving existing technologies; but when
threatened by substitution, incumbents may engage in innovation projects
that may have been economically infeasible when competing for marginal
cost advantage. However, such projects suddenly become feasible in the
face of the devaluation of existing assets (for a review of the economic logic
of investment in innovation, see Henderson, 1993, or Tripsas, 1997). In
other words, innovation efforts previously not justified by a marginal
innovation return may seem reasonable if they could preempt substitution,
leading incumbents to invest in innovations they may have once ignored
(Henderson, 1993; Martin and Mitchell, 1998; Mitchell, 1991). In more
practical terms, carburetor producers battling competitors on cost may not
be able to justify the expense of certain innovation improvements but when
threatened by total replacement, the investments become reasonable in the
face of losing the entire asset base.
From an organization perspective, incumbents locked in fierce
competition among similar competitors may have cognitive and
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organizational impediments that lead them to overlook innovations that
could potentially increase technology performance (Gilbert, 2005; Porac et
al., 1995; Tripsas et al., 2000). However, both organization and innovation
theorists have suggested that above all else, organizations are motivated to
survive (March and Simon, 1958; Thompson, 1967). Therefore, when
threatened, organizations may suddenly recognize innovations that were
previously unseen. For example, Utterback (1996) described how when
threatened by mechanical refrigeration, ice harvesters switched from
removing ice with horses to tractors—an innovation within reach but unseen
until threatened with substitution. Similarly, when threatened,
organizations, may consider alternatives that were previously ignored. For
example, in a study of change in the medical imaging industry, Martin and
Mitchell (1998) observed that incumbents tended to introduce new product
designs only when threatened by declining market share or substitute
product design. In support of this view, Tripsas (2009) noted that the digital
photography company Linco failed to recognize the opportunities in the
parallel flash drive market until their business began to be threatened by
their competitor, Sysco, who introduced a flash drive product. Even when
thinking of organizations more broadly, threat can lead to the recognition of
innovation that may have been previously overlooked. For example, in 1870,
when the City of Paris was suddenly threatened with invasion for the first
time in centuries, despite France itself having been engaged in a war for
almost a millennium, citizens suddenly came up with so many innovations
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that the city had to establish a scientific committee to process the burst of
new ideas, some as familiar today as tanks, germ warfare, chemical
warfare, petroleum napalm, and handheld grenades (Horne, 2002).
Although the City of Paris ultimately capitulated (as did sailing ships and ice
harvesting), there are times when the incumbents do defend against the
threat by improving technology (e.g., silicon semiconductors, WAP
protocols, many nanotechnology applications). Therefore, although the
carburetor industry appeared to have reached the apex of its innovation
capability after decades of competition, we hypothesize that incumbents
facing a threat from a new technology will expend extra efforts to innovate,
leading to a sudden leap in the technology trajectory.
Hypothesis 2 (H2): When threatened by a new technology generation,
incumbents’ efforts to extract greater performance from existing
technology will contribute to a last gasp in the technology trajectory.
Although the innovation efforts of an incumbent has been the primary
explanation for a last gasp, there may be other previously unexamined
reasons contributing to a last gasp. A second potential source of a last gasp
may simply be incumbent reconfiguration. Often over the course of firm
growth, a firm may diversify into market niches they can profitably serve
but where their product or processes are comparatively poorly suited. For
example, although carburetors tend to operate more efficiently in smaller
vehicles, manufacturers also produced carburetors for heavy machinery,
such as dump trucks, where the carburetor operates much less efficiently.
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Prior work suggest that when facing a potential threat, such as a
technological discontinuity, incumbents may be forced out of market
segments where their products are the least competitive (Christensen,
1997; Christensen et al., 1996). In addition to forced retreat, other work
suggests that, when threatened, incumbents may choose to reconfigure
their resources to respond to the threat, often by recalibrating around their
sources of advantage (Adner and Helfat, 2003; Adner and Snow, 2010b;
Lavie, 2006). As an illustration in the carburetor market, when EFI first
appeared in the auto industry, it emerged in high-end, large, expensive car
models that could absorb the significant increase in cost and where, due to
the large vehicle weight, carburetors were particularly inefficient solutions.
Some carburetor firms actively retreated from these segments in order to
focus on small and moderate weight vehicles where they had an advantage
relative to the threatening technology. Although ex post such a strategy
may appear to result in a death spiral for the firm (Leonard-Barton, 1992),
ex ante such a strategy appears rational and may have worked in some
technological transitions where next-generation technologies coexist
alongside incumbents that have entrenched in their areas of comparative
advantage (e.g. e-books versus traditional books, laptops versus notebooks,
and so forth). More importantly, retreat and reconfiguration may be an
overlooked source of the apparent last gasp. Specifically, as incumbents pull
out of market segments where they are less competitive, the ‘performance’
of a technology trajectory may appear to make a sudden leap simply
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because incumbents selling the technology have retreated from the poorest
performing applications to the highest performing applications.
Hypothesis 3 (H3): When threatened by a new technology generation,
incumbents reconfiguring to market segments where they have
comparative advantage relative to the threatening technology will
contribute to a last gasp in the technology trajectory.
Finally, another reason for a last gasp in the technology trajectory
may be that when faced with a potential but uncertain technological
discontinuity, incumbents can defend against the potential disruption by
recombining components from the new technology with older technology to
improve the performance of the older technology. We define such a
combination of technology from different technical areas as a hybrid and, in
this paper, focus on the specific case of hybrids that combine technology
from the old and new generation into one product (Baldwin and Clark,
2000). Such intergenerational hybrids require some level of component
modularity in each technical generation and are often based on the product
architecture of the old technology. The emergence of hybrids has been
observed in the study of several technology transitions, including the
business machines (Rosenbloom, 2000), typesetting (Tripsas, 1997b),
semiconductor equipment (Henderson et al., 1990), and newspaper
industries (Gilbert, 2005). Modern examples—such as the hybrid electric
vehicle, the hybrid SSD / hard drive storage device, the digital SLR camera,
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or the Microsoft Surface (hybrid between tablet and notebook)—continue to
emerge.
Despite the prevalence of hybrids during and sometimes after
technology transitions, their impact remains a point of contention. One view
seems to suggest that hybrids are the physical manifestation of
organizational dysfunction: rigid incumbents unable to break the frame of
extant technology create clumsy products that are neither here nor there.
For example, Henderson and Clark (1990) observed that semiconductor
equipment producers often struggled to recognize the architectural changes
of the next generation, so they created clumsy hybrids that contained
components from the new generation that were based on the older
architecture, such as Kasper’s attempt to introduce contact aligners with
proximity aligner components. As another example, Tripsas (1997a)
observed that in the typesetting industry an incumbent attempting to
address the shift from hot metal typesetting to phototypesetting created a
clumsy hybrid based on the old hot metal architecture. Therefore, hybrids
may be technologies that are neither here nor there and are simply the
byproduct of organizational rigidity.
However, another view suggests that hybrids may play an important
role in the transition from one technical paradigm to another. Although new
technologies often threaten to displace an older technology, often such
threats do not emerge; even when a discontinuity does occur, it can take a
surprisingly long time to shift from one generation to the next. Although an
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armchair strategist might suggest that as soon as a new generation
emerges incumbents should leap to the next generation, in practice, firms
leaping too early are often censured for moving too quickly and wasting
precious resources (Benner, 2007, 2010). For example, Microsoft was
criticized for leaping too early into interactive media control with WebTV
and Apple was critiqued for leaping too early into PDAs with the Newton
and into digital cameras with the QuickTake. While those early products
failed, those same industries later emerged as profitable technical
transformations (Kaplan and Segan, 2008). Therefore, during the period
when a transition may be uncertain or in process, incumbents have the
struggle of how to address a potential new generation while an older
generation remains profitable. Under such circumstances, a hybrid may
actually be a sophisticated hedging and learning strategy. Specifically,
borrowing from a future technical paradigm provides a learning option for
firms: if the threatening technology materializes, incumbents have
developed some knowledge about how it operates and are better positioned
to adapt. However, if the threatening technology proves less viable, by
borrowing components from the threatening technology, they can both
preserve existing resources and possibly capture any residual spillovers
from the new generation. For example, gas-electric hybrid vehicles borrow
components from electric vehicles, grafting them into traditional
combustion vehicles. If a future emerges dominated by electric vehicles, the
makers of hybrids will have decades of experience with the design,
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sourcing, and production of components such as batteries, electric motors,
and electric drivetrains, which could provide a significant advantage.
However, if the future remains dominated by combustion vehicles, the
makers of hybrids may be able to gain advantages over those combustion
vehicles by borrowing the best components from the threatening technical
generation. In the carburetor industry, such hybrids emerged as standard
carburetors equipped with Fuel Feedback System FFS controls—a
component from the EFI technical generation grafted onto the carburetor
architecture. Therefore, we hypothesize that under the appropriate
conditions (technical discontinuity outcome uncertainty, technical
generations with modular components that allow for the development of
hybrids), incumbents are likely to borrow components from a threatening
technology as an option on the future technology, which also improves the
performance of the older technical generation.
Hypothesis 4 (H4): When threatened by a new technology generation,
incumbents recombining components from the threatening technology
with extant technology will contribute to a last gasp in the technology
trajectory.
RESEARCH SETTING AND DESIGN
The research setting is the automobile carburetor industry during a
period of transition to electronic fuel injection technologies from 1978 to
1992. Automobile carburetors served the purpose of mixing gasoline and air
in a ratio that can be burned efficiently by the car’s engine, and a car’s fuel
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economy performance depends heavily on the carburetor. Carburetors
employed the Bernoulli effect—essentially simple suction—to draw gasoline
into the stream of air entering the engine.
Carburetors were the standard technology for preparing gasoline for
combustion from the invention of the automobile in the late 1800s through
the early 1980s. In the 1960s and 1970s, increasing oil prices and a growing
awareness of air pollution moved U.S. policymakers to regulate automobile
fuel economy and airborne pollutant emissions. In response to those
regulations and market demand for fuel-efficient cars, automakers and
suppliers worked to improve carburetor performance in order to extract
higher miles per a gallon—a critical performance criteria for both suppliers
and automakers enforced as a federal regulation on the overall miles per
gallon (MPG) for the manufacturers’ fleets. In particular, carburetor
manufacturers strove to improve emissions and fuel economy performance
by increasing the precision of control for the ratio of air and gasoline
entering the engine. The closer these proportions matched the ideal so-
called stoichiometric ratio, the better the performance of the engine. But by
the end of the 1970s, carburetor performance seemed to have reached its
limit in terms of consistent delivery of a stoichiometric mixture of air and
fuel.
By 1980, as an alternative to carburetors, EFI was offered for the first
time on mass produced automobiles.1 EFI used sensors and an onboard
1 The history of automobile fuel injection systems starts long before 1980, however. During World War II, the German firm
Bosch invented mechanical fuel injection (MFI) for use in military aircraft. Development continued after the war in high-end and
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computer to monitor the engine's performance and change operating
parameters in real time to adjust to changing conditions. This allowed
precise control of an automobile’s air/fuel mixture. The increased precision
allowed automakers to use more advanced emissions control devices (such
as the catalytic converter), and it gave cars better fuel economy
performance. Importantly, the sensors and electronics that EFI required
had not been developed before the advent of EFI—existing microelectronics
were too delicate for the harsh environments automobiles presented.
Therefore, at the emergence of EFI, it was not clear to carburetor
manufacturers if EFI could survive in passenger cars or be produced cost
effectively. However, if successful, EFI would completely substitute the
carburetor manufacturers and, therefore, it represented a very real threat
that could destroy their core industry. The plot in Figure 1 shows counts of
automobile models equipped with carburetors and EFI during the 10-year
transition period from the former to the latter.
< Insert Figure 1 about here>
DataThe data come from three sources. The first data set, provided by the
U.S. Environmental Protection Agency, lists fuel economy and tailpipe
emissions performance for each type of car model sold in the United States
racing automobiles. MFI used a complex mechanical pump to deliver pulses of gasoline through nozzles into each cylinder in the
engine. In the late 1960s, fuel injection systems that contained some electrical controls were offered in a small number of car
models. The first modern electronic fuel injection systems, which we refer to as EFI, appeared in 1980. The feature that identifies
them as EFI in this study is the presence of closed-loop controls that sense the engine's performance and that change operating
parameters in real time. The U.S. EPA refers to these as feedback fuel systems. Because MFI and early electrical fuel injection
application was limited to a few automobiles, and it is (literally in this case) an historical footnote, we do not include it in this
analysis.
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for the automobile model years 1978 through 1992. In these data, a car
model is any available combination of model name, model year, body type,
engine size, transmission type, power output, and carburetor or EFI. This
data set is merged with a data set from the U.S. National Highway Traffic
Safety Administration (NHTSA) and the Department of Transportation that
contains observations of each car model’s physical characteristics—weight,
car class, number of doors, type of engine, size of engine, type of
transmission, type of fuel delivery system, and presence of engine
management computer. Finally, for all car models for which we were able to
find a repair manual with carburetor part numbers, we used repair manuals
to identify the manufacturer of the car model’s carburetor.
The resulting data set contains 10,505 observations, an average of
700 car models per year from 1978 through 1992. It clearly shows the
pattern of substitution that occurred as EFI technology grew to dominate
the car market. In the first year of the sample, carburetors are found in 100
percent of the models. The first EFI systems appeared in 1980 and by 1992,
they had completely displaced carburetors from the market (see Figure 1).
Table 1 provides a description of the variables we used, their construction,
and their summary statistics. Table 2 reports the correlation matrix of these
variables. Table 3 reports descriptive statistics for these variables.
<Insert Table 2 about here>
Dependent Variable
23
Fuel Economy Growth Rate (MPG). We calculate annual fuel economy
growth rate by interacting MPG (miles per gallon) with a model year
counter (years from start of the sample).. As discussed earlier, the (MPG)
performance of a vehicle is strongly influenced by the carburetor and by the
technology it incorporates, and it is the most representative performance
variable for manufacturers driven to increase performance by federal
regulation and competitive pressure.2 The U.S. EPA reports MPG
performance on both city and highway test cycles and on a combined
city/highway test cycle for each car model. We use this combined
city/highway cycle MPG result as the dependent variable because it most
accurately represents real, in-use MPG performance. We estimate fuel
economy performance of an individual carburetor as the MPG of the
automobile after controlling for all observable other-than-carburetor
physical attributes of the car that impact its fuel economy.
Independent Variables
2 Carburetor performance can be measured on several dimensions, but we have chosen to focus on fuel consumption in this study
because it is the clearest and most economically important measure of carburetor performance. Other potential performance
dimensions include fuel consumption, emissions performance, and drivability. Carburetor emissions performance depends
heavily on other components (such as catalytic converters) that we cannot observe in these data, so performance of a carburetor is
impossible to identify independent from the performance of these other components. To add to the difficulty of measuring a
carburetor’s emissions performance, during the period of the transition from carburetors to EFI, there was little useful variation in
emissions performance—cars passed or they did not. A regulatory regime in which manufacturers were not given credit for
overachieving on emissions performance contributed to the lack of variation. Drivability, while important, is difficult to measure
objectively. Fuel consumption is objectively measured. It is possible to estimate a carburetor’s contribution to a car model’s fuel
consumption. Finally, carmakers received credit in the form of avoiding punishment (fines) by overachieving relative to
regulatory standards. Overachievement in one car model was a fungible benefit that could be applied to underachievement in
another of the firm’s models. For these reasons, we use (car-attribute-controlled) fuel consumption to measure carburetor
performance.
24
Car model attributes. The data set contains measures of physical
attributes that influence a car model’s MPG performance. A vector of these
car model-specific attributes is included in all but one of the specifications,
the reason for which will be explained later. The variables measure a car
model’s weight in pounds (WEIGHT), its engine’s horsepower output
(POWER), the presence of an automatic (rather than a manual) transmission
(AUTO), and the engine displacement (a measure of the engine’s size) in
cubic centimeters (ENGINECC).
Carburetor (CARB) or electronic fuel injection (EFI). These dummy
variables indicate the type of fuel delivery system present in a car model. A
fuel delivery system in this data set is either a carburetor (CARB = 1 or EFI
= 0) or an electronic fuel injection system (CARB = 0 and EFI = 1) as
reported by the EPA. The CARB and EFI variables are perfectly inversely
related. Both are used in the specifications for ease of coefficient
interpretation.
Electronic feedback fuel system controls (FFS or NOTFFS). This
dummy variable indicates the presence (or absence) of FFS controls in a
car’s fuel delivery system. Electronic FFS controls enable electronic fuel
injection (EFI) systems to measure engine performance and to adjust
operating parameters in real time, an ability necessary to the proper
functioning of an EFI system. Although such functionality was not a
necessary component in a carburetor fuel delivery system, most
manufacturers adapted FFS for use in carburetor systems. The variables
25
FFS and NOTFFS are perfectly inversely related.
Car model year through 1983 (PRE) and car model year after 1983
(POST). The PRE and POST dummy variables indicate whether a car model
was built before or after the arrival of EFI. Starting in 1980, car models
equipped with EFI start to appear in the sample. The model year 1992 was
the last year for carburetors in the U.S. automobile market (see Figure 1).
The point at which EFI arrived as a threat to the carburetor (and thus the
point at which we would expect the last gasp to occur) presumably falls
somewhere between these two dates. As a practical matter, identifying the
precise date on which EFI began to represent a viable threat to the
carburetor is not possible, so we run our specifications on a range of dates
on which this reasonably may have occurred.3 The methodology used here is
as follows: the pattern in Figure 1 indicates rapid growth in EFI adoption
from 1984 through 1988. Assuming a lag of two to five years from the point
at which an automaker specifies a car model’s fuel system and the point at
which the car model is introduced, carburetor firms may have recognized as
early as 1981 and as late as 1986 that EFI represented a serious threat to
3 A related issue is whether there may have been variation in the time at which individual carburetor firms sensed the threat posed
by EFI. First, the event that seems to have caused the carburetor’s last gasp—the arrival of EFI—happened to all of the players in
the market at the same time. Although carburetor firms may have responded at slightly different speeds, the impetus to respond
impacted them at essentially the same time because product plans are widely known among competitors in the auto industry. This
is, in part, because union negotiations are transparent, there is movement of engineers among firms, and there is a shared supply
base for many components. As an empirical matter, the robustness of the results to moving specific year provides some evidence
that there is not systematic bias introduced by firms having potentially different dates at which they adopted EFI or at which the
threat of EFI materialized for them.
26
carburetors.4 The empirical tests in this section were conducted with a
range of EFI ‘arrival’ dates, starting with an assumed arrival date in the
middle of the 1981-1986 range. Results are substantively similar with
category splits ranging from 1982-83 through 1985-86, so a midpoint split
(1983-84) is used for the presented results. The PRE and POST variables
are perfectly inversely related.
Mixed EFI/carburetor firm (MIXED) or carburetors-only firm (PURE).
These dummy variables are generated by combining information about a car
model (from the EPA data), the manufacturer of the carburetor found in the
car model (from carburetor repair manuals), and the product portfolio of the
carburetor manufacturer as described in industry journals. This
combination generates a sample of car models about which the carburetor’s
manufacturer’s product portfolio is known. This sample contains 595 car
models distributed over 11 years. Table 5 reports descriptive statistics for
this group. Car models containing a carburetor from a firm that produced
primarily carburetors are identified as PURE = 1. Car models containing a
carburetor from a firm that produced both carburetors and EFI systems are
identified as MIXED = 1.
Specifications
To test the hypotheses, we look for relationships between the arrival
of the new technology (EFI) and performance changes in the existing
4 There is qualitative evidence that EFI’s ultimate victory was seen as a fait accompli. As late as the early 1980s, knowledgeable
industry observers were uncertain about whether EFI would cause the eventual death of the carburetor. Carburetors were
improving and, at that point, the future trajectory of EFI’s progress was not clear (Norbye 1981).
27
technology (carburetors). In general terms, the empirical strategy in this
section is to start with a specification that estimates the rate of carburetor
performance improvement before and after the emergence of EFI as a
potentially dominant new technology. This simple OLS model is described
in Equation 1
MPGi=β1 (YEAR∗CARB∗PRE )i+β2 (YEAR∗CARB∗POST )i+β3 (YEAR∗EFI )i+δ ( X )i+ε i
in which a carburetor’s fuel efficiency in miles per gallon (MPG) is
estimated by regressing a car model’s MPG on time trend variables before
and after the arrival of EFI. In this model, the fuel economy (MPG) of car
model i is regressed on interactions between the car model’s YEAR and
three mutually exclusive and collectively exhaustive categorical variables.
This specification permits us to report coefficient estimates for all
categories in the regression tables. This type of specification, commonly
used in labor economics, removes the constant and does not make use of
the typical practice of omitting a base category whose coefficient estimate
is zero (Jacob and Lefgren, 2003; Jacob, Lefgren, and Moretti, 2007). The
attractiveness of this approach is that it makes it possible to interpret the
coefficient estimates for multiple-category interactions like those reported
in Table 5. These three categories indicate the car’s type of fuel delivery
system (CARB or EFI) and, in the case of carburetors, whether the car
model appeared PRE or POST the arrival of EFI. The vector X contains
carburetor fixed effects for the pre-EFI period and EFI and carburetor fixed
effects (the base interaction terms) for the post-EFI period. For the initial
28
results, the counterfactual carburetor fuel economy improvement in this
analysis is the controlled rate of carburetor improvement before the arrival
of EFI. Then, in order to understand technology and firm-type effects, we
compare rates of carburetor improvement across these categories in the
post-EFI arrival era. The focus on rate of change rather than level of fuel
economy provides a clear picture of technological development trends.
To control for alternate explanations beyond the hypothesized effects,
specifically patterns that might cause the improvement observed in this
base specification to be amplified by a change in the population to which
carburetors were used, we specify a second OLS model including a vector of
variables describing attributes of car model i. Although this simple
specification controls for changes in the population of cars in which
carburetors remained, it does not account for nonrandom assignment of
carburetors and EFI to individual car models. As a result, the endogenous
nature of the selection process could cause biased coefficient estimates. To
prevent such biases and address the possibility of this type of selection, we
use an instrumental variables (IV) approach in a two-stage least squares
(2SLS) regression. We instrument for the presence of a carburetor in a
given car model by using the carburetor penetration rate in car models built
by different manufacturers, but that were built in the same year, have
engines with the same number of cylinders, and are about the same size
(within the same 200 cubic centimeter displacement group). This measure
captures variation, ostensibly driven by considerations known to car
29
companies but not to the researchers, in the penetration rate of carburetors
across different types of car engines. In notation, the instrument for the
presence of a carburetor in car model i built by manufacturer j in model
year k with engine type l is
CARBINST ijkl=∑p ≠i
∑q≠ j
MODELpqkl , carburetor
∑p ≠i
∑q ≠ j
MODELpqkl , carburetor∨EFI
where the numerator is the sum of all cars built in model year k with engine
type l that are carbureted, but that are not model i (and, therefore, are not
built by manufacturer j). The denominator is the sum of all cars built in
model year k with engine type l that are carbureted or have EFI, but that
are not model i and are not built by manufacturer j.
The advantage of this instrument is that its validity can be determined
deductively. The instrument is correlated with the propensity of an
individual car model to be equipped with a carburetor. However, the
instrument contains no information about the focal car model, so it is not
correlated with unobserved characteristics specific to that model. This
means there is not a causal relationship between carburetor penetration
among similar engines and the propensity for the focal car model to be
equipped with a carburetor.
One potential problem with this instrument is that carburetor
penetration may be correlated with the physical attributes common to cars
equipped with similar engines. This would be problematic if we did not have
30
detailed controls for the physical attributes of individual car models
(because of remaining engine type group-level endogeneity). However,
because the data contain variables measuring individual car model physical
attributes, we can control for considerations that might change the
likelihood of an individual car model being equipped with a carburetor. As a
result, this instrument is valid under the maintained assumption that there
are no unobserved engine type effects that are correlated with MPG once
we have controlled for individual car model attributes.
Based on the logic of the three hypothesized firm actions that may
contribute to a last gasp, we form three alternative 2SLS specifications that
follow the construction in the base OLS specification (with instruments for
the presence of a carburetor) and that add variables consistent with those
explanations. The specifications in this section implicitly allow the proposed
explanations to operate in concert rather than in a mutually exclusive way.
Therefore, the results are not sensitive to the order in which the controls
are added—the sequential construction of the specifications is for
expositional clarity only. Again, for ease of coefficient interpretation where
there are many interacted variables, the regressions are specified with
mutually exclusive and collectively exhaustive categories with no omitted
variable. As a result, each coefficient is interpretable as a stand-alone
estimate for that category—it is not interpreted as a difference from an
omitted category and it is not necessary to add it to any other category. The
limitation to this strategy is that a post-estimation Wald test must be used
31
to determine whether coefficients are significantly different from one
another. These are reported where relevant. All regressions are reported
with robust standard errors.5 As additional robustness tests we also
constructed models estimating controlled annual MPG growth within each
category independently (i.e. without interaction terms). Comparison across
these models replicates those reported in the fully interacted models
reported here.
RESULTS
Last Gasp
In Hypothesis 1, we proposed that when threatened by a potential
technological discontinuity, the technology trajectory of an older technology
would experience a last gasp, or unexpected increase in the technology
performance trajectory. From a data description standpoint, a plot of fuel
efficiency over time shows that after the introduction of EFI, cars equipped
with carburetors exhibited dramatically increased fuel economy. In Figure
2, the mean annual fuel economy of car models equipped with carburetors
is plotted against the mean annual fuel economy of car models equipped
with EFI. The plots, de-meaned to remove changes in the overall fleet of
cars and to highlight the relative performance of the two technologies in
5 The data are not arranged as a panel of car models because a car’s model name (e.g., Mustang) does not convey useful fuel
economy information about a car year over year or even within year. For example, a Ford Mustang shares many components with
other cars from Ford, Lincoln, and Mercury. But a 1992 Mustang shares very little with a 1993 Mustang. Furthermore, a 1992
Mustang with a four-cylinder engine may have more in common (from the perspective of engine and transmission) with another
Ford model than it does with a 1992 Mustang with an eight-cylinder engine. For these reasons, we cluster standard errors on
brand (Ford, Chevrolet, etc.) rather than on model name (Mustang, Celebrity, etc.) and do not include model fixed effects.
Standard errors have been clustered both ways with no significant effect on results.
32
actual use, appear to show a dramatic increase in fuel economy of car
models equipped with carburetors—the last gasp of the carburetor.
<Insert Figure 2 about here>
Statistically, Model 1 in Table 4 reports the results of a simple OLS model
exploring the MPG growth rate before and after the arrival of the EFI
threat. The results show that after the arrival of EFI, the performance of the
carburetor increased from a growth rate of 0.346 MPG to a rate of 0.858
MPG, a difference statistically significant with a t-test at the 1 percent level.
In other words, these results suggest support for H1: that the arrival of the
EFI led to a last gasp in carburetor technology. Multiple robustness checks
of the arrival date confirm these results, as described in the methods
section.
Reconfiguration
However, although we observe a last gasp using a simple OLS
specification, there may be many forces contributing to the last gasp,
including the selection effects described in Hypothesis 3. Specifically, in
Hypothesis 3, we argued that when threatened, incumbents would
reconfigure, or retreat, to areas of comparative advantage, creating an
endogeneous selection effect. For example, as automakers faced pressures
to increase fuel economy, they may have reconfigured their car designs
creating smaller, lighter cars to increase fuel economy—a change which
would make it appear that carburetor performance improved when, in fact,
the characteristics of the car population actually changed. Alternatively, EFI
33
may have forced carburetor manufacturers to retreat to areas of
comparative advantage, displacing carburetors from the market starting in
heavier and more powerful car models (see Table 3) where the cost of EFI
could be more easily absorbed, leaving carburetors in lighter and less
powerful vehicles. In the data, we can observe this shift over time and
control for it by including variables describing the car model’s physical
characteristics relevant to MPG. If changes in carbureted car model
characteristics (measured here by the variables WEIGHT, POWER, AUTO,
and ENGINECC) are responsible for carburetor performance improvement,
then we would expect that the inclusion of these controls should account for
the increase in MPG growth. In support of Hypothesis 3 (retreat and
recombination), we find that after adding these controls to the simple OLS
model in Model 2 of Table 4, estimated annual carburetor MPG growth
(YEAR*CARB*PRE) decreases from 0.80 MPG per year before the entrance
of EFI to 0.44 MPG per year after (YEAR*CARB*POST), a change significant
at the 1 percent level.6 This oversimplified model suggests that a changing
population of carbureted cars accounts for the entire last gasp, providing
support for H3, but calling H1 (last gasp) into question.
However, this simple OLS analysis does not account for a second,
more subtle selection effect shaping a potential last gasp: auto
manufacturers may have chosen to equip car models with EFI according to
6 The R2 levels in these regressions are very high by social sciences standards because the data are generated by mechanical
components in the automobile interacting in a system governed by physical laws.
34
the expected impact it would have on MPG. This selection effect represents
the active effort by manufacturers to reconfigure their automobile portfolio
by putting carburetors in models where they had the best fit. To control for
this type of selection, we employ a 2SLS regression, reported in Model 3 of
Table 5, with the inclusion of the CARB instrument described earlier.
Interestingly, the revised estimates of MPG growth rates in this regression
are substantially different from the OLS estimates: annual carburetor MPG
growth increases by 0.26 MPG more per year after the emergence of the
EFI threat than before the threat, a difference significant at the 5 percent
level (p < 0.05). In other words, reconfiguration appears to account for
some, but not all, of the apparent last gasp, providing support for H3. Most
importantly, even when accounting for the contribution of reconfiguration
to the last gasp, a significant positive change in MPG growth rates remains,
providing support for H1, or a last gasp in the technology trajectory. This
last gasp effect, after controlling for the different types of reconfiguration,
proved robust under all the conditions described in the methods section and
for multiple specifications employing alternate controls.
Recombination
In Hypothesis 4, we argued that when threatened by a new
technology, incumbents recombine new technologies with older
technologies to improve performance. In the case of carburetors and EFI, a
prime candidate for an intergenerational technological spillover is
electronic feedback fuel system (FFS) controls because such controls were
35
not available before the emergence of EFI but they could be integrated into
the architecture of carburetors. Therefore, we investigate incumbents
adopting FFS controls and ask whether FFS-equipped carburetors
experienced greater MPG growth than non-FFS-equipped carburetors and
to what extent this difference can explain carburetor MPG growth. The EPA
data indicate whether a particular carbureted car includes FFS controls,
and this allows carbureted cars to be divided into two categories―those
equipped with FFS and those without FFS. To test whether the addition of
FFS components had an impact on carburetor efficiency growth, we
reestimate the specification in Table 5, but divide carbureted cars in the
post-EFI era into those with and without FFS.
As the resulting estimates in Model 4 of Table 5 show, after the
emergence of the EFI threat, annual MPG growth was, in fact, higher for
carburetors equipped with FFS than it was for those without FFS.
Carburetors with FFS are estimated to have grown more efficient by 1.90
MPG per year during the post-EFI period, and non-FFS carburetor MPG are
estimated to have grown significantly less quickly during this same period,
at 0.73 MPG per year (both estimates significantly different at the 1 percent
level). These results provide support for Hypothesis 4, that recombination
contributed to the last gasp and, at first blush, seem to suggest that the
performance increase for carburetors actually came from hybrid
carburetors, not from simply ‘trying harder’ to innovate in the old
technology.
36
Innovation
In Hypothesis 2, we argued that the primary explanation for the last
gasp offered by prior literature—trying harder to innovate—would
contribute to a last gasp in performance. Under this explanation,
incumbents threatened by the entry of a new technology expend extra effort
to squeeze even more performance from a threatened technology. The
initial examination of Model 4 in Table 5 described earlier suggests that in
fact ‘trying harder’ may not contribute to a last gasp in performance as the
performance of non-hybrid carburetors appeared to drop from 1.231 MPG
to 0.729 MPG rate, a difference significant at the 1 percent level. This
evidence would appear to lack support for the primary hypothesis provided
by prior literature that, when threatened, incumbents try harder to innovate
and thereby extract more performance from the older technology.
<Insert tables 3 - 5 about here>
Exploratory Analysis: Incumbent Technology Choice and the Last Gasp
The surprising lack of support for the primary explanation for last
gasps offered by prior literature led us to the question of individual firm
technology choice. For the most part, prior literature has explored the last
gasp phenomenon at the level of the industry, or technology trajectory,
ignoring the effects of individual firm technology choices on the last gasp.
To better understand the effect of firm technology choice, we categorized
firms based on one of three primary technology responses to the threat of
EFI: (1) retrench in carburetors, (2) invest in hybrids, or (3) invest in EFI.
37
These categories represent primary technology choices. All firms produced
both carburetors and hybrids, but the differences in primary technology
choice were clearly manifest in number of models, stated priorities, and
even in microbehaviors (for example, incumbents focusing on standard
carburetors purchased the hybrid FFS components whereas incumbents
focusing on hybrids chose to manufacture them—a choice reflecting greater
commitment). Because R&D expenditures were not available for many firms
due to their private ownership structure, we categorized firms based on the
investment priorities, reflected in number of new product models offered
(types of carburetors) and in stated priorities noted in industry magazines.
As a robustness check, we examined a continuous measure based on the
number of carburetor model types produced by each firm, which replicated
the results. Therefore, for interpretive simplicity, we chose to use a binary
representation of primary firm technology choice. These large firms and
their technology choices (which make up more than 99 percent of the
market) are reported in Table 6. Descriptive statistics suggest that 50
percent of incumbents retrenched into carburetors and 50 percent chose to
shift investment to hybrid carburetors. Interestingly, no incumbents elected
to leap straight into EFI—a telling technology choice we will return to later.
After grouping incumbents based on their primary technology choice,
we reexamined Hypothesis 1 (innovation) employing the same 2SLS analysis
but grouping the analysis based on firm technology choices. Specifically, in
Model 5 of Table 5, we split incumbents into PURE (firms choosing to
38
retrench in carburetors) and MIXED (firms choosing to invest in hybrids).
We first tested for potential differences in initial capabilities before the
arrival of the threat and we found that although the MPG growth rate was
slightly higher for MIXED firms in absolute terms (1.233 growth rate for
MIXED versus 1.023 growth rate for PURE) before the EFI threat, this
difference was not statistically significant.
Next, Hypothesis 2 argued that when threatened, incumbents will
attempt to squeeze extra innovation out of the existing technology, which
will lead to a last gasp. Arguably, for those PURE firms choosing to focus
primarily on old carburetors, the threat of an EFI technological
discontinuity may have a greater impact than for those MIXED firms
experimenting with hybrids carburetors which could give provide them an
option on a future EFI world. If these threatened PURE firms were trying
harder to innovate, we should expect to find that carburetors from PURE
carburetor firms improved more rapidly after the arrival of EFI than did
carburetors from MIXED firms.
In support of this hypothesis, the estimates presented in Model 5 of
Table 5 provide tantalizing clues about the nature of threat on incumbent
efforts to improve technology. For incumbents choosing to retrench into
standard carburetors, fuel economy growth in their hybrid carburetors was
significantly worse than the growth these firms obtained from their old-
fashioned carburetors before the arrival of EFI, falling from 1.02 MPG per
year to 0.55 MPG per year, a difference significant at the 1 percent level.
39
However, fuel economy growth in their old-fashioned carburetors actually
significantly improved after the arrival of EFI, increasing from 1.02 MPG
per year to 1.48 MPG per year, a difference significant at the 5 percent
level. This suggests that threatened PURE firms may have directed extra
innovation effort according to their primary technology choice—the old-
fashioned carburetors not equipped with the FFS components from EFI. In
summary, we find support for Hypothesis 2, that innovation efforts led to a
last gasp but qualified by incumbent technology choice: the last gasp in the
standard carburetor occurred only for those incumbents who chose to
retrench into carburetors.
By contrast, for MIXED incumbents that chose to make significant
investments into hybrid carburetors, we see a different pattern of last gasp.
The changes observed in MIXED firm MPG growth rates are almost the
opposite from those observed among PURE firms: MIXED firms’ hybrid
carburetors (FFS) improved more rapidly after the threat. By contrast, fuel
economy growth in their non-hybrid carburetors worsened after the threat.
These results also provide support for Hypothesis 2, qualified by incumbent
technology choices: firms investing in hybrid carburetors experienced a last
gasp in hybrid carburetors but not standard carburetors. In summary, the
nature of incumbent technology choice shaped how those actions impacted
the evolution of a last gasp: incumbents choosing to focus on the original
carburetor produced a last gasp in original carburetors, whereas
incumbents focusing efforts on hybrid carburetors produced a last gasp in
40
hybrid carburetors. Overall this supports Hypothesis 2 but with much
greater nuance than established in prior qualitative or empirical work.
Exploratory Analysis: Performance Implications
Finally, the performance consequences of the last gasp are important,
but largely unaddressed, considerations. Does the last gasp affect the pace
of the technology transition overall and how do incumbent technology
choices affect the performance of individual firms? In terms of technology
trajectory, although the primary purpose of the paper was to provide
empirical validation of the last gasp and the sources contributing to the last
gasp, we can provide some initial evidence to the performance
consequences of the last gasp. Arguably it is possible that a last gasp could
defer or delay a technology transition, in some cases for years, as has
occurred in the semiconductor, lightbulb, and electric vehicle industries. To
determine the effect of the last gasp on the carburetor industry, we
estimate a substitution function that follows a Fisher-Pry logistical curve
(Dattee, 2007). We do this by first estimating the logistic growth trajectory
(‘S’-curve) of EFI as a function of time. We then estimate a model in which
yearly splines are included in the logit around the time of the carburetor’s
last gasp. This allows for a delay in growth of EFI adoption. The revised
model increases the pseudo-R2 of the logit by 1.2%. Although this is a
relatively modest improvement, it is in the expected direction, which is
evidence that supports a delay that is visually quite stark in Figures 3 and 4.
This preliminary analysis suggests that while the last gasp in carburetors
41
did not stop the transition to EFI, it did delay the technological discontinuity
approximately 2 years depending on the market segment.
< Insert Figure 3 and 4 about here>
In terms of the effect of firm technology choice on performance
outcomes, we can provide some qualitative evidence. First, we observed
that none of the incumbents choosing to retrench into carburetors
successfully transitioned to EFI (see Table 6). Every incumbent choosing to
retrench effectively failed. Second, we observed that no incumbents chose
to leap straight to EFI technologies. Third, we observed that all firms
choosing to invest heavily in hybrid technologies successfully survived the
transition to EFI technologies. This represents an important observation
with potential implications for the study of technological discontinuities and
firm strategy; we will return to this point later. In conclusion, firm
technology choice appears to have significant effects on the survival of
incumbents during a technical discontinuity as does the last gasp on the
timing of the technical discontinuity.
DISCUSSION AND CONCLUSION
Although in the canonical description of industry evolution,
technology discontinuities follow a rapid transition from old to new
technology during which time rigid incumbents are swept aside, sometimes
such transitions take longer than expected or never occur at all. Prior
literature has suggested that one reason for the delay may be the tendency
of an older technology to exhibit a last gasp—a sudden, unexpected increase
42
in the technology performance trajectory—when threatened. While prior
literature has suggested this pattern, there has been little empirical
verification of the last gasp and almost no attention to the sources of a last
gasp beyond suggesting that incumbents try harder to innovate (Gilfillan,
1935; Harley, 1988).
In this paper, we provide some initial empirical verification of the last
gasp, in the setting of the carburetor industry when threatened by a
potential technical discontinuity with the emergence of electronic fuel
injection. In addition, we suggest two additional potential sources of the last
gasp—reconfiguration and recombination—in addition to the more common
‘trying harder’ explanation offered by the literature. We find support that all
three source—innovation, reconfiguration, and recombination—contribute
to a last gasp, but in some unexpected ways. First, we find evidence that
incumbents retreat and reconfigure, creating the appearance of a last gasp
—although product performance may not improve per se—rather the
apparent performance improvement is the result of the product retreating
from less efficient to more efficient applications. Second, even when
accounting for such selection pressures, we find that recombination, or the
creation of hybrids between the old and new technology generations, makes
a significant contribution to the last gasp. Third, while we initially failed to
find evidence that the primary innovation explanation offered by prior
literature contributed to a last gasp, once we accounted for incumbent
technology choices, we found that incumbents focusing their efforts on the
43
original carburetor contributed to a last gasp in standard carburetors; those
incumbents focusing on hybrid carburetors contributed to a last gasp in
hybrid carburetors. This finding provides support for the effect of
incumbent efforts to try harder, qualified by their technology choices.
Lastly, we estimated that the last gasp did defer the technology
discontinuity for a time. Furthermore, although no incumbents leapt
immediately to EFI, only those incumbents first investing in hybrid
carburetors survived the transition to EFI technology.
These results contribute to our understanding of technology evolution
and the last gasp. Although Tushman and Anderson (1990; 1986) helped
define the broad characteristics of technology transition, recent work has
begun to flesh out the dynamics of these transitions more fully. For
example, Adner and Kapoor (2012) argue that the emergence of a new
technology and the shape of its trajectory depend on the ecosystem
surrounding a particular innovation. Although the last gasp has been
suggested by several prior observers, we add to this emerging discourse by
demonstrating the existence and sources of a last gasp. Furthermore, we
suggest that the last gasp has important performance implications that may
be more or less significant depending on industry. Although in the case we
studied, EFI technologies eventually replaced the carburetors, carburetor
firms had previously successfully defended themselves against the threat of
wick carburetors, rotating brush carburetors, catalytic carburetors,
vaporizers, and mechanical fuel injectors. If the carburetor’s last gasp had
44
more effectively defended its place in the automobile, students of the
industry would likely be praising the innovativeness of incumbents rather
than criticizing their rigidity—much as we do when describing
semiconductor incumbents today. The point is that the last gasp and its
effect on deferring or even defeating technology transitions gets little
attention from scholars, but considering these counterfactuals remains
important to developing a robust theory. For example, over the years, there
have been many technologies that seemed likely, imminent replacements
for the incandescent lightbulb. Neon, halogen, fluorescent, compact
fluorescent, and LED are among the principal substitutes that have been
heralded as the death knell of the incandescent bulb. However, as scholars,
we have few, if any, core narratives that describe doomed executives at
incandescent lightbulb companies, grimly holding on to their losing
technology as the waves of creative destruction drown them. Rather, efforts
to extract additional performance from the lowly incandescent lightbulb
seem to have held off the challengers for now, even though the challengers
have had the force of government regulation on their sides. It is only after a
successful technology transition has occurred that we can tell the rigidity
narrative. And for now, we don’t have that narrative for incandescent
lightbulbs or silicon semiconductors. This work highlights the need to
develop a more robust representation of incumbent actions that goes
beyond the interpretation that incumbents are either rigid or engage in full-
scale transformation. As a first step toward this discussion, we describe and
45
validate three specific responses—innovation, reconfiguration, and
recombination—that contribute to the emerging discussion of how firms
actively respond to discontinuities (Eggers and Kaplan, 2009; Kaplan, 2008;
Tushman and Rosenkopf, 1996).
In addition, the surprising results around the creation of hybrids
spanning technological discontinuities represents an important new topic in
the study of firm strategy and technological evolution. Although hybrids
have been observed in prior studies of technological discontinuities, they
are often discounted as representations of organizational dysfunction.
However, we proposed that hybrids could be a sophisticated learning option
strategy whereby incumbents can learn about a potential future technology
during the gray area between transitions. If the transition fails to occur, the
incumbents engaging in hybrids have not risked everything and have
potentially gained an advantage over competitors in the process. However,
if the transition does occur, the incumbents developing hybrids have a
potential advantage in making the leap to the next generation. We did
observe that the development of hybrids contributed to the last gasp. More
importantly, however, we observed that only those incumbents seriously
developing hybrids survived the technological discontinuity. Qualitatively it
appears that developing hybrids allowed incumbents to develop the needed
capabilities to transition to EFI, during and after the technological
discontinuity occurred. Hybrids, therefore, offer an important opportunity
for study. Clearly the potential for hybrids to occur are limited by certain
46
characteristics: for example, modular components that can be grafted onto
compatible architectures in the context of a period of uncertainty (as
opposed to a short, rapid technical discontinuity). Nonetheless, the role of
hybrids deserves significant further study, which the authors hope to
continue in future work.
Finally, these findings contribute to the literature on change in
dynamic environments (Agarwal et al., 2009; Eisenhardt, Furr, and
Bingham, 2010; Rindova and Kotha, 2001), which emphasizes the need to
quickly adapt to environmental changes such as technological
discontinuities. Whereas one may be tempted to assume that leaping to a
new market or technology is always preferable, our results provide insight
into the dynamic uncertainty that firms face in making such decisions
(Davis, Eisenhardt, and Bingham, 2009). Not only do firms face outcome
uncertainty, but their actions to fight the threat can shift the very frontier of
performance, which further complicates the timing of the decision of
whether to leap to a new market. In this paper, we show that waiting to leap
may be a prudent decision when the technology frontier moves and that a
recombination strategy can act as a hedge against technological
uncertainty. We believe these observations contribute to the conversation
regarding the dynamic forces inside and outside the firm that affect the
timing and outcome of firm strategy, particularly in innovation contests
(Agarwal, Sarkar, and Echambadi, 2002; Benner et al., 2002; Helfat and
Peteraf, 2003).
47
In closing, although our study is limited by the focus on the
carburetor industry, there are many contemporary technology industries
that appear to have experienced last gasps, including CISC processor
architecture, incandescent lightbulbs, photovoltaics, steel bicycle frame
materials, coronary artery bypass graft (CABG) surgery, and silicon
semiconductors just to name a few. In some cases, the last gasp may have
given the incumbents false hope that they might survive a threat, but in
other cases, the last gasp seems to have allowed an extant technology to
defeat a threat. In a world increasingly influenced by technology and
shaped by change (D'Aveni, 1994; Wiggins and Ruefli, 2005), how firms
manage both threat and transition may become as relevant as how firms
maintain advantage once they capture an opportunity (Anderson, 1999;
Eisenhardt and Bhatia, 2002). We hope these findings contribute to the
development of robust theory about how organizations operate in and
manage such environments.
48
Table 1. Descriptive statistics of variables
Variable Construction Obs.Mean
Std. Dev Min
Max
MPG City-highway miles per gallon of gasoline, U.S. EPA
10,505
24.5
6.9 9 69
WEIGHT Weight of the vehicle (pounds)
10,505
3,497
792 1,750
6,000
POWER Engine horsepower 10,505
124 43 41 478
AUTO Dummy var: (1) auto. trans. or (0) man. trans.
10,505
0.52
- 0 1
ENGINECC
Engine displacement in cubic centimeters
10,505
3,110
1,416
802 7,538
CARB Dummy var: (1) carburetor or (0) electronic fuel injection
10,505
0.46
- 0 1
EFI Dummy var: (1) electronic fuel injection or (0) carburetor
10,505
0.54
- 0 1
FFS Dummy var: (1) feedback fuel system or (0) none
10,505
0.71
- 0 1
PRE Dummy var: (1) obs 1978-83 or (0) obs 1984-92
10,505
0.27
- 0 1
POST Dummy var: (1) obs 1984-92 or (0) obs 1978-83
10,505
0.73
- 0 1
49
Table 2. Correlation matrix of variables
MPGWEIGHT
POWER
AUTO
ENG CC CARB EFI FFS PRE POST
MPG 1.00
WEIGHT -0.85 1.00
POWER -0.61 0.65 1.00
AUTO -0.31 0.27 0.19 1.00
ENGINECC -0.80 0.87 0.64 0.27 1.00
CARB -0.13 0.02 -0.29 -0.05 0.19 1.00
EFI 0.13 -0.02 0.29 0.05 -0.19 -1.00 1.00
FFS 0.23 -0.09 0.16 0.03 -0.21 -0.70 0.70 1.00
PRE -0.21 0.02 -0.16 0.01 0.18 0.56 -0.56 -0.65 1.00
POST 0.21 -0.02 0.16 -0.01 -0.18 -0.56 0.56 0.65 -1.00 1.00
50
Table 3. Car model mean values by model year
51
52
YearObs
N
CARB = 1
N
MPG
mean
WEIGHT
mean
POWER
mean
1978 420 420 22.
0 3,370 111
1979 436 436 22.
2 3,234 107
1980 621 564 20.
2 3,737 121
1981 618 542 22.
0 3,664 117
1982 754 633 23.
9 3,491 109
1983 797 637 24.
7 3,478 107
1984 558 378 25.
7 3,307 107
1985 778 448 25.
7 3,376 114
1986 786 322 25.
5 3,436 121
1987 804 208 25.
6 3,441 124
1988 777 96 25.
5 3,499 132
1989 738 59 25.
4 3,522 133
1990 802 24 25.
4 3,561 139
1991 817 15 25.
4 3,549 145
1992 799 11 25.
0 3,647 152
Total or
Wtd.
10505 4793 24.
5 3,497 124
53
Table 4. OLS tests of explanations for last gasps dependent variable: MPG
(1) (2)
YEAR*CARB*PRE
YEAR*CARB*POST
YEAR*EFI
CARB*PRE
CARB*POST
EFI
WEIGHT
POWER
AUTO
ENGINECC
Model degrees of freedomResidual degrees of freedomObservationsAdjusted R2
0.346 (0.093)** 0.858 (0.090)**-0.093 (0.028)**--664.082 (183.870)** -1,678.162 (178.155)** 210.245(54.682)**
62710,5050.93
0.801 (0.045)** 0.442 (0.043)** 0.382 (0.015)** -1,538.486 (89.347)** -826.419 (85.464)** -707.710(28.786)** -0.006 (0.000)** -0.037 (0.001)** -1.254(0.057)** 0.000 (0.000)**102710,5050.97
Notes: * p < 0.05, ** p < 0.01. Robust standard errors in parentheses. Standard errors adjusted for 27 automobile brand clusters. Coefficient
54
estimates for interacted variables are interpretable without being added to other coefficients. The interacted variables create mutually exclusive and exhaustive categories for the observations in the data.
55
Table 5. Second stages of 2SLS regressions for last gasps dependent variable: MPG
(3) (4) (5)YEAR*CARB*PRE
YEAR*CARB*PRE*PURE
YEAR*CARB*PRE*MIXED
YEAR*CARB*POST
YEAR*CARB*POST*FFS
YEAR*CARB*POST*NOTFFS
YEAR*CARB*POST*FFS*PURE
YEAR*CARB*POST*FFS*MIXED
YEAR*CARB*POST*NOTFFS*PURE
YEAR*CARB*POST*NOTFFS*MIXED
YEAR*EFI
WEIGHT
POWER
AUTO
ENGINECC
CARB*PRE
CARB*PRE*PURE
CARB*PRE*MIXED
CARB*POST
CARB*POST*FFS
CARB*POST*NOTFFS
CARB*POST*FFS*PURE
CARB*POST*FFS*MIXED
CARB*POST*NOTFFS*PURE
CARB*POST*NOTFFS*MIXED
EFI
Model degrees of freedom
1.217(0.071)**
1.483(0.125)**
0.530(0.023)**-0.011(0.000)**-0.047 (0.002)**-1.401(0.079)**0.002(0.000)**54.336(0.871)**
50.911(0.739)**
1.231(0.072)**
1.903(0.187)**0.729(0.144)**
0.530(0.023)**-0.011(0.000)**-0.047(0.002)**-1.401(0.079)**0.002(0.000)**54.336(0.871)**
47.875(0.991)**56.854(1.322)**
1.023(0.168)**1.233(0.074)**
0.550(0.197)**1.951(0.198)**1.479(0.251)**0.688(0.147)**0.536(0.024)**-0.011(0.000)**-0.048(0.003)**-1.385(0.081)**0.002(0.000)**
53.782(1.069)**54.660(0.940)**
56.709
56
Residual degrees of freedomObservations
57.649(0.923)**10268,955
58.096(0.923)**12268,955
(1.648)**47.419(1.076)**50.500(1.753)**57.057(1.360)**57.963(0.993)**14268,955
Notes: * p < 0.05, ** p < 0.01. Robust standard errors in parentheses. Standard errors adjusted for 27 automobile brand clusters. Coefficient estimates for interacted variables are interpretable without being added to other coefficients. The interacted variables create mutually exclusive and exhaustive categories for the observations in the data.
57
Table 6. Firm technology choice and outcomes for major carburetor producers
Carburetor company
Primary tech choice during
transitionOutcome* Eventual EFI
company Details of outcome
Aisan Hybrid carburetors
Successful transition (partial)
Aisan/DensoMerge with another firm (electronics) in Toyota family; supply an EFI components
Carter Standard carburetors Failure --
Exit through discounted acquisition (Colt Industries) to become niche parts supplier (making helicopter parts)
Ford/Motorcraft
Hybrid carburetors
Successful transition Ford/Motorcraft Survive as captive parts division
of Ford
Hitachi Hybrid carburetors
Successful transition Hitachi/JECS Joint venture with Bosch and
emerged as major supplier
Holley Standard carburetors Failure -- Exit to niche (aftermarket
supplier)
Mikuni Solex Standard carburetors Failure -- Exit to niche (motorcycles)
Keihin Standard carburetors Failure --
Exit to niche (motorcycles); continue to supply other parts as part of Honda family
Nikki Standard carburetors Failure -- Exit through discounted
acquisition (Hitachi)
Weber Hybrid carburetors
Successful transition Weber Survive to become EFI producer,
survived as supplier to FIAT
GM/Rochester Hybrid carburetors
Successful transition GM/Rochester
Survive to become EFI producer, captive parts division of GM, survived
*Performance outcomes are difficult to categorize because of the variety of firm outcomes. We classify an exit from carburetors as a failure. We also classify the transition to a niche supplier as a failure since this
58
represents a shift from being a multi-billion dollar primary supplier to a niche supplier a fraction the previous firm size (often with revenues less than 5 percent of prior revenues).
59
Figure 1. Count of annual model EFI and carburetor usage
Figure 2. Mean annual carburetor and EFI MPG versus mean annual total MPG for models sold in U.S. (plots of the annual mean MPG of each population of automobile type, measured against the mean annual MPG for the total population of car models)
60
Figure 3. Plot of delayed diffusion of EFI
Figure 4. Plot of delayed diffusion of EFI with delay splines
61
62
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