The Evolution of New Industries and the Determinants of Market Structure
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New industries grow rapidly, then experience a significant shakeout, with 38 of 46 products showing a net decrease of 52% in producers by 1981.
Klepper/Graddy argue that they“..establish that the number of firms in new industries follows a distinctive path: first it grows, then declines sharply, and finally levels off…”echoing a cycle of new entries followed by shakeouts
Their takeaway, “…Analyzing first the data on the number of firms, each product history was divided into a maximum of three stages. Stage 1 is composed of the years in which the number of firms grows. Stage 2 is characterized by a decline or shakeout in the number of firms. Stage 3 is composed of the period after the shakeout when the number of firms stabilizes…One factor bearing on the evolutionary process is chance. In each period, potential entrants randomly receive information that qualifies them for a particular cost. The realization of this random process will have an important effect on an industry’s ultimate market structure. To see this, note that the model predicts thatthe industry will even be composed of only those firms that attain the lowest possible cost after imitation, with the largest firms being those that were among the first to attain this cost. If, after the first N firms attain this cost, there is an unexpectedly long period before other firms receive the information required to attain this cost, then the N-firm concentration ratio of the industry will be high, ceteris paribus. Indeed, if there is an unexpectedly long delay after the first firm attains the lowest possible cost, then the industry could end up as a virtual monopoly…”


Steven Klepper and Elizabeth Graddy, “The Evolution of New Industries and the Determinants of Market Structure,” The RAND Journal Of Economics, Spring 1990, https://www.jstor.org/stable/2555491
Their evidence, “…Table 1 lists the 46 products and the number of years in each stage for each product. The table indicates that by 1981, all but 8 of the products had attained stage 2, and 22 of the 46 products had attained stage 3. The 8 products that had not attained stage 2 by 1981 are relatively young, with a mean birth year of 1945 versus 1926 for the other 38 products. Thus, it might be expected that eventually these products will also pass through a shakeout period before reaching maturity. While the 46 products appear to follow a similar pattern in terms of the three stages in the number of producers, Table 1 indicates that the length of each stage varies considerably across products. This is particularly true for stage 1, where some products have a much longer gestation period before developing a sizable market.9 The average number of years in stages 1 and 2 across all products attaining the next stage is reported at the bottom of Table 1. Table 2 lists the mean annual change in the number of producers in each stage for each product. Not surprisingly, in each stage there is considerable variation across products in the mean annual change in the number of producers, particularly in stages 1 and 2. What is more surprising is the severity of stage 2 (the shakeout) and the relative stability in the number of producers in stage 3. The severity of stage 2 is conveyed by Table 3, which reports the net decrease in the number of producers in stage 2 as a fraction of the peak number of producers for the 22 products attaining stage 3 by 1981. On average, Table 3 indicates there was a net decrease of 52% of the producers in stage 2, with some industries experiencing a shakeout of over 80% of their producers. In contrast, there is no clear trend in the number of producers in stage 3 for the same 22 products: 11 experience a net increase, 8 a net decrease, and 3 no change at all in the number of producers...”




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