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Entry and Innovation in Vertically Differentiated Markets

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Author Info
Dirk Bergemann
Juuso Valimaki

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Abstract

This paper analyzes the optimal entry into experience goods markets with vertically differentiated buyers. We consider the case where the value of the new product is imperfectly know, but common to all buyers (common values) as well as the case where the quality is different across buyers (private values). We distinguish between enw products that are improvements to existing products and new products that are sbustitutes. Different types of products have qualitatively distinct diffusion paths. Improvements are introduced slowly relative to the full information case, while the substitutes are introduced more aggressively. The slow entry strategy is associated with increasing supply and decreasing prices over time. The reverse patterns holds for an aggressive entry strategy. The incentives to innovate display a similar dinstinction. A firm with a currently inferior product opts for a large but risky innovation, whereas a currently superior product chooses a smaller but certain innovation.

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Paper provided by Northwestern University, Center for Mathematical Studies in Economics and Management Science in its series Discussion Papers with number 1260.

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Date of creation: May 1999
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Handle: RePEc:nwu:cmsems:1260

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Related research
Keywords: Experience Goods Vertical Differentiation Entry Innovation.

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Find related papers by JEL classification:
D81 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Criteria for Decision-Making under Risk and Uncertainty
D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search, Learning, and Information

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  1. Jaskold Gabszewicz, J. & Thisse, J. -F., 1980. "Entry (and exit) in a differentiated industry," Journal of Economic Theory, Elsevier, vol. 22(2), pages 327-338, April. [Downloadable!] (restricted)
  2. Dirk Bergemann & Juuso Valimaki, 1996. "Market Diffusion with Two-Sided Learning," Cowles Foundation Discussion Papers 1138, Cowles Foundation, Yale University. [Downloadable!]
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  3. Godfrey Keller & Sven Rady, 1999. "Market Experimentation in a Dynamic Differentiated-Goods Duopoly," STICERD - Theoretical Economics Paper Series 369, Suntory and Toyota International Centres for Economics and Related Disciplines, LSE. [Downloadable!]
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  4. Harrington Jr. , Joseph E., 1995. "Experimentation and Learning in a Differentiated-Products Duopoly," Journal of Economic Theory, Elsevier, vol. 66(1), pages 275-288, June. [Downloadable!] (restricted)
  5. Rothschild, Michael, 1974. "A two-armed bandit theory of market pricing," Journal of Economic Theory, Elsevier, vol. 9(2), pages 185-202, October. [Downloadable!] (restricted)
  6. Bagwell, Kyle & Riordan, Michael H, 1991. "High and Declining Prices Signal Product Quality," American Economic Review, American Economic Association, vol. 81(1), pages 224-39, March. [Downloadable!] (restricted)
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  7. Prescott, Edward C, 1972. "The Multi-Period Control Problem Under Uncertainty," Econometrica, Econometric Society, vol. 40(6), pages 1043-58, November. [Downloadable!] (restricted)
  8. Milgrom, Paul & Roberts, John, 1986. "Price and Advertising Signals of Product Quality," Journal of Political Economy, University of Chicago Press, vol. 94(4), pages 796-821, August. [Downloadable!] (restricted)
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  9. Mirman, Leonard J & Samuelson, Larry & Urbano, Amparo, 1993. "Monopoly Experimentation," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 34(3), pages 549-63, August. [Downloadable!] (restricted)
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  10. Jaskold Gabszewicz, J. & Thisse, J. -F., 1979. "Price competition, quality and income disparities," Journal of Economic Theory, Elsevier, vol. 20(3), pages 340-359, June. [Downloadable!] (restricted)
  11. Gene M. Grossman & Elhanan Helpman, 1991. "Quality Ladders in the Theory of Growth," NBER Working Papers 3099, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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  12. Aghion, Philippe & Howitt, Peter, 1992. "A Model of Growth through Creative Destruction," Econometrica, Econometric Society, vol. 60(2), pages 323-51, March. [Downloadable!] (restricted)
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  13. Rothschild, Michael & Stiglitz, Joseph E., 1970. "Increasing risk: I. A definition," Journal of Economic Theory, Elsevier, vol. 2(3), pages 225-243, September. [Downloadable!] (restricted)
  14. Shaked, Avner & Sutton, John, 1982. "Relaxing Price Competition through Product Differentiation," Review of Economic Studies, Blackwell Publishing, vol. 49(1), pages 3-13, January. [Downloadable!] (restricted)
  15. Judd, Kenneth L & Riordan, Michael H, 1994. "Price and Quality in a New Product Monopoly," Review of Economic Studies, Blackwell Publishing, vol. 61(4), pages 773-89, October. [Downloadable!] (restricted)
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  16. Aghion, Philippe & Harris, Christopher & Vickers, John, 1997. "Competition and growth with step-by-step innovation: An example," European Economic Review, Elsevier, vol. 41(3-5), pages 771-782, April. [Downloadable!] (restricted)
  17. Esther Gal-Or, 1983. "Quality and Quantity Competition," Bell Journal of Economics, The RAND Corporation, vol. 14(2), pages 590-600, Autumn. [Downloadable!] (restricted)
  18. Joseph Farrell, 1986. "Moral Hazard as an Entry Barrier," RAND Journal of Economics, The RAND Corporation, vol. 17(3), pages 440-449, Autumn. [Downloadable!] (restricted)
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  19. Jacques Cremer, 1984. "On the Economics of Repeat Buying," RAND Journal of Economics, The RAND Corporation, vol. 15(3), pages 396-403, Autumn. [Downloadable!] (restricted)
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