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Entry and Vertical Differentiation

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Author Info
Dirk Bergemann () (Yale University, Cowles Foundation)
Valimaki Juuso (University of Southampton)

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Abstract

This paper analyzes the entry of new products into vertically differentiated markets where an entrant and an incumbent compete in quantities. The value of the new product is initially uncertain and new information is generated through purchases in the market. We derive the (unique) Markov perfect equilibrium of the infinite horizon game under the strong long run average payoff criterion. The qualitative features of the optimal entry strategy are shown to depend exclusively on the relative ranking of established and new products based on current beliefs. Superior products are launched relatively slowly and at high initial prices whereas substitutes for existing products are launched aggressively at low initial prices. The robustness of these results with respect to different model specifications is discussed. Classification-JEL: C72, C73, D43, D83 Keywords: Entry, Duopoly, Quantity Competition, Vertical Differentiation, Bayesian Learning,Markov Perfect Equilibrium, Experimentation, Experience Goods

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Publisher Info
Paper provided by Cowles Foundation, Yale University in its series Cowles Foundation Discussion Papers with number 1302.

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Length: 41 pages
Date of creation: May 2001
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Publication status: Published in Journal of Economic Theory (2002), 106(1): 91-125
Handle: RePEc:cwl:cwldpp:1302

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  3. 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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  4. Patrick Bolton & Christopher Harris, 1999. "Strategic Experimentation," Econometrica, Econometric Society, vol. 67(2), pages 349-374, March.
  5. Andrew Ching, 2000. "Dynamic Equilibrium in the US Prescription Drug Market After Patent Expiration," Econometric Society World Congress 2000 Contributed Papers 1242, Econometric Society. [Downloadable!]
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  7. Mirman, L.J. & Samuelson, L. & Urbano, A., 1989. "Monopoly Experimentation," Papers 8-89-7, Pennsylvania State - Department of Economics.
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    • Amparo Urbano & Larry Samuelson & Leonard J. Mirman, 1990. "Monopoly Experimentation," Working Papers. Serie AD 1990-04, Instituto Valenciano de Investigaciones Económicas, S.A. (Ivie). [Downloadable!]
    • 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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  11. 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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  12. Prescott, Edward C, 1972. "The Multi-Period Control Problem Under Uncertainty," Econometrica, Econometric Society, vol. 40(6), pages 1043-58, November. [Downloadable!] (restricted)
  13. 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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  14. Aghion, Philippe & Espinosa, Maria Paz & Jullien, Bruno, 1993. "Dynamic Duopoly with Learning through Market Experimentation," Economic Theory, Springer, vol. 3(3), pages 517-39, July.
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  15. Godfrey Keller & Sven Rady, 1998. "Market Experimentation in a Dynamic Differentiated-Goods Duopoly," Game Theory and Information 9810001, EconWPA, revised 20 Aug 1999. [Downloadable!]
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  16. McLennan, Andrew, 1984. "Price dispersion and incomplete learning in the long run," Journal of Economic Dynamics and Control, Elsevier, vol. 7(3), pages 331-347, September. [Downloadable!] (restricted)
  17. 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)
  18. 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)
  19. 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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  20. Aghion, Philippe, et al, 1991. "Optimal Learning by Experimentation," Review of Economic Studies, Blackwell Publishing, vol. 58(4), pages 621-54, July. [Downloadable!] (restricted)
  21. Shaked, Avner & Sutton, John, 1983. "Natural Oligopolies," Econometrica, Econometric Society, vol. 51(5), pages 1469-83, September. [Downloadable!] (restricted)
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(explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)

  1. Anderson, Axel & Cabral, Luís M B, 2004. "Go For Broke or Play it Safe? Dynamic Competition with Choice of Variance," CEPR Discussion Papers 4249, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
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