Market Segmentation and the Sources of Rents from Innovation: Personal Computers in the Late 1980's
This paper evaluates the sources of transitory market power in the market for personal computers (PCs) during the late 1980's. Our analysis is motivated by the coexistence of low entry barriers into the PC industry and high rates of innovative investment by a small number of PC manufacturers. We attempt to understand these phenomena by measuring the role that different principles of product differentiation (PDs) played in segmenting this dynamic market. Our first PD measures the substitutability between Frontier (386-based) and Non- Frontier products, while the second PD measures the advantage of a brand-name reputation (e.g., by IBM). Building on advances in the measurement of product differentiation, we measure the separate roles that these PDs played in contributing to transitory market power. In so doing, this paper attempts to account for the market origins of innovative rents in the PC industry. Our principal finding is that, during the late 1980's, the PC market was highly segmented along both the Branded (B versus NB) and Frontier (F versusNF) dimensions. The effects of competitive events in any one cluster were confined mostly to that particular cluster, with little effect on other clusters. For example, less than 5% of the market share achieved by a hypothetical entrant would be market-stealing from other clusters. In addition, the product diffe- rentiation advantages of B and F were qualitatively different. The main advantage of F was limited to the isolation from NF competitors it provided; Brandedness both shifted out the product demand curve as well as segmenting B products from NB competition. These results help explain how transitory market power (arising from market segmentation) shaped the underlying incen- tives for innovation in the PC industry during the mid to late 1980s.
|Date of creation:||Aug 1996|
|Date of revision:|
|Publication status:||published as RAND Journal of Economics, Special Issue in Honor of Richard E. Quandt, Volume 28-0, (1997): pp. 17-44|
|Contact details of provider:|| Postal: National Bureau of Economic Research, 1050 Massachusetts Avenue Cambridge, MA 02138, U.S.A.|
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- Chamberlain, Gary, 1987. "Asymptotic efficiency in estimation with conditional moment restrictions," Journal of Econometrics, Elsevier, vol. 34(3), pages 305-334, March.
- Ernst R. Berndt & Zvi Griliches, 1993.
"Price Indexes for Microcomputers: An Exploratory Study,"
in: Price Measurements and Their Uses, pages 63-100
National Bureau of Economic Research, Inc.
- Ernst R. Berndt & Zvi Griliches, 1990. "Price Indexes for Microcomputers: An Exploratory Study," NBER Working Papers 3378, National Bureau of Economic Research, Inc.
- Igal Hendel, 1994. "Estimating Multiple-Discrete Choice Models: An Application to Computeri-zzation Returns," NBER Technical Working Papers 0168, National Bureau of Economic Research, Inc.
- Richard C. Levin & Alvin K. Klevorick & Richard R. Nelson & Sidney G. Winter, 1987. "Appropriating the Returns from Industrial Research and Development," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 18(3), pages 783-832.
- Baker, Jonathan B. & Bresnahan, Timothy F., 1988. "Estimating the residual demand curve facing a single firm," International Journal of Industrial Organization, Elsevier, vol. 6(3), pages 283-300.
- Richard Gilbert & Carl Shapiro, 1990.
"Optimal Patent Length and Breadth,"
RAND Journal of Economics,
The RAND Corporation, vol. 21(1), pages 106-112, Spring.
- Timothy F. Bresnahan & Robert J. Gordon, 1996. "The Economics of New Goods," NBER Books, National Bureau of Economic Research, Inc, number bres96-1, September.
- Berry, Steven & Levinsohn, James & Pakes, Ariel, 1995. "Automobile Prices in Market Equilibrium," Econometrica, Econometric Society, vol. 63(4), pages 841-90, July.
- Hausman, J.A., 1994.
"Valuation of New Goods Under Perfect and Imperfect Competition,"
94-21, Massachusetts Institute of Technology (MIT), Department of Economics.
- Jerry A. Hausman, 1996. "Valuation of New Goods under Perfect and Imperfect Competition," NBER Chapters, in: The Economics of New Goods, pages 207-248 National Bureau of Economic Research, Inc.
- Jerry A. Hausman, 1994. "Valuation of New Goods under Perfect and Imperfect Competition," NBER Working Papers 4970, National Bureau of Economic Research, Inc.
- Small, Kenneth A, 1987. "A Discrete Choice Model for Ordered Alternatives," Econometrica, Econometric Society, vol. 55(2), pages 409-24, March.
- Steven T. Berry, 1994. "Estimating Discrete-Choice Models of Product Differentiation," RAND Journal of Economics, The RAND Corporation, vol. 25(2), pages 242-262, Summer.
- Kenneth Arrow, 1962. "Economic Welfare and the Allocation of Resources for Invention," NBER Chapters, in: The Rate and Direction of Inventive Activity: Economic and Social Factors, pages 609-626 National Bureau of Economic Research, Inc.
- Richard C. Levin & Alvin K. Klevorick & Richard R. Nelson & Sidney G. Winter, 1988. "Appropriating the Returns from Industrial R&D," Cowles Foundation Discussion Papers 862, Cowles Foundation for Research in Economics, Yale University.
- Joanna Stavins, 1995. "Estimating demand elasticities in a differentiated product industry: the personal computer market," Working Papers 95-9, Federal Reserve Bank of Boston.
- Daniel McFadden, 1977. "Modelling the Choice of Residential Location," Cowles Foundation Discussion Papers 477, Cowles Foundation for Research in Economics, Yale University.
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