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Oligopoly Limit Pricing

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  • Kyle Bagwell
  • Garey Ramey

Abstract

We expand Milgrom and Roberts' (1982) limit pricing model to allow for multiple incumbents. Each incumbent is informed as to the level of an industry cost parameter and selects a preentry price while a single entrant observes each incumbent's preentry price. We find that incumbents are unable to coordinate deception, which results in a separating equilibrium in which preentry prices are not distorted. Further, introducing the refinement of unprejudiced beliefs, we show that the no-distortion equilibrium is the only refined separating equilibrium. Plausible pooling equilibria fail to exist or involve downward distortions in preentry prices.

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Bibliographic Info

Paper provided by Northwestern University, Center for Mathematical Studies in Economics and Management Science in its series Discussion Papers with number 829.

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Date of creation: Apr 1989
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Handle: RePEc:nwu:cmsems:829

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Web page: http://www.kellogg.northwestern.edu/research/math/
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References

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  1. Matthews, Steven A & Mirman, Leonard J, 1983. "Equilibrium Limit Pricing: The Effects of Private Information and Stochastic Demand," Econometrica, Econometric Society, vol. 51(4), pages 981-96, July.
  2. Dixit, Avinash, 1980. "The Role of Investment in Entry-Deterrence," Economic Journal, Royal Economic Society, vol. 90(357), pages 95-106, March.
  3. Waldman, Michael, 1987. "Noncooperative Entry Deterrence, Uncertainty, and the Free Rider Problem," Review of Economic Studies, Wiley Blackwell, vol. 54(2), pages 301-10, April.
  4. Milgrom, Paul & Roberts, John, 1982. "Limit Pricing and Entry under Incomplete Information: An Equilibrium Analysis," Econometrica, Econometric Society, vol. 50(2), pages 443-59, March.
  5. Bonanno, Giacomo, 1987. "Location Choice, Product Proliferation and Entry Deterrence," Review of Economic Studies, Wiley Blackwell, vol. 54(1), pages 37-45, January.
  6. B. Curtis Eaton & Richard G. Lipsey, 1980. "Exit Barriers are Entry Barriers: The Durability of Capital as a Barrier to Entry," Bell Journal of Economics, The RAND Corporation, vol. 11(2), pages 721-729, Autumn.
  7. Franco Modigliani, 1958. "New Developments on the Oligopoly Front," Journal of Political Economy, University of Chicago Press, vol. 66, pages 215.
  8. McLean, Richard P. & Riordan, Michael H., 1989. "Industry structure with sequential technology choice," Journal of Economic Theory, Elsevier, vol. 47(1), pages 1-21, February.
  9. B. Curtis Eaton & Roger Ware, 1987. "A Theory of Market Structure with Sequential Entry," RAND Journal of Economics, The RAND Corporation, vol. 18(1), pages 1-16, Spring.
  10. Bagwell, Kyle & Ramey, Garey, 1990. "Advertising and pricing to deter or accommodate entry when demand is unknown," International Journal of Industrial Organization, Elsevier, vol. 8(1), pages 93-113.
  11. Gilbert, Richard & Vives, Xavier, 1986. "Entry Deterrence and the Free Rider Problem," Review of Economic Studies, Wiley Blackwell, vol. 53(1), pages 71-83, January.
  12. Richard Schmalensee, 1978. "Entry Deterrence in the Ready-to-Eat Breakfast Cereal Industry," Bell Journal of Economics, The RAND Corporation, vol. 9(2), pages 305-327, Autumn.
  13. Steven A Matthews & Doron Fertig, 1990. "Advertising Signals of Product Quality," Discussion Papers 881, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
  14. David M Kreps & Robert Wilson, 2003. "Sequential Equilibria," Levine's Working Paper Archive 618897000000000813, David K. Levine.
  15. Fudenberg, Drew & Tirole, Jean, 1983. "Capital as a commitment: Strategic investment to deter mobility," Journal of Economic Theory, Elsevier, vol. 31(2), pages 227-250, December.
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