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Entry and Innovation in Vertically Differentiated Markets

  • Dirk Bergemann
  • Juuso Valimaki

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
Date of revision:
Handle: RePEc:nwu:cmsems:1260
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  1. Dirk Bergemann & Juuso Valimaki, 1996. "Market Diffusion with Two-Sided Learning," Cowles Foundation Discussion Papers 1138, Cowles Foundation for Research in Economics, Yale University.
  2. Gene M. Grossman & Elhanan Helpman, 1989. "Quality Ladders in the Theory of Growth," NBER Working Papers 3099, National Bureau of Economic Research, Inc.
  3. 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.
  4. 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.
  5. Paul R. Milgrom & John Roberts, 1984. "Price and Advertising Signals of Product Quality," Cowles Foundation Discussion Papers 709, Cowles Foundation for Research in Economics, Yale University.
  6. GABSZEWICZ, Jean J. & THISSE, Jacques-François, . "Entry (and exit) in a differentiated industry," CORE Discussion Papers RP 400, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  7. Kyle Bagwell & Michael Riordan, 1988. "High and Declining Prices Signal Product Quality," Discussion Papers 808, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
  8. Prescott, Edward C, 1972. "The Multi-Period Control Problem Under Uncertainty," Econometrica, Econometric Society, vol. 40(6), pages 1043-58, November.
  9. repec:bla:restud:v:61:y:1994:i:4:p:773-89 is not listed on IDEAS
  10. Aghion, P. & Howitt, P., 1989. "A Model Of Growth Through Creative Destruction," UWO Department of Economics Working Papers 8904, University of Western Ontario, Department of Economics.
  11. Aghion, Philippe & Howitt, Peter, 1992. "A Model of Growth Through Creative Destruction," Scholarly Articles 12490578, Harvard University Department of Economics.
  12. Godfrey Keller & Sven Rady, 1999. "Market experimentation in a dynamic differentiated-goods duopoly," LSE Research Online Documents on Economics 19346, London School of Economics and Political Science, LSE Library.
  13. 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.
  14. repec:bla:restud:v:49:y:1982:i:1:p:3-13 is not listed on IDEAS
  15. 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.
  16. Rothschild, Michael, 1974. "A two-armed bandit theory of market pricing," Journal of Economic Theory, Elsevier, vol. 9(2), pages 185-202, October.
  17. Rothschild, Michael & Stiglitz, Joseph E., 1970. "Increasing risk: I. A definition," Journal of Economic Theory, Elsevier, vol. 2(3), pages 225-243, September.
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