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Do mergers lead to monopoly in the long run? Results from the dominant firm model

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  • Gautam Gowrisankaran
  • Thomas J. Holmes

Abstract

Will an industry with no antitrust policy converge to monopoly, competition or somewhere in between? We analyze this question using a dynamic dominant firm model with rational agents, endogenous mergers and constant returns to scale production. We find that perfect competition and monopoly are always steady states of this model and that there may be other steady states with a dominant firm and a fringe co-existing. Mergers are likely only when supply is inelastic or demand is elastic, suggesting that the ability of a dominant firm to raise price through monopolization is limited. Additionally, as the discount rate increases, it becomes harder to monopolize the industry, because the dominant firm cannot commit to not raising prices in the future.

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Bibliographic Info

Paper provided by Federal Reserve Bank of Minneapolis in its series Staff Report with number 264.

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Date of creation: 2000
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Handle: RePEc:fip:fedmsr:264

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Keywords: Consolidation and merger of corporations;

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  1. Perry, Martin K & Porter, Robert H, 1985. "Oligopoly and the Incentive for Horizontal Merger," American Economic Review, American Economic Association, vol. 75(1), pages 219-27, March.
  2. Morton I. Kamien & Israel Zang, 1987. "The Limits of Monopolization Through Acquisition," Discussion Papers 754, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
  3. Shleifer, Andrei & Vishny, Robert W., 1986. "Large Shareholders and Corporate Control," Scholarly Articles 3606237, Harvard University Department of Economics.
  4. Kwang Soo Cheong & Kenneth L Judd, 1997. "Mergers and Dynamic Oligopoly," Working Papers 199714, University of Hawaii at Manoa, Department of Economics.
  5. Kenneth L. Judd & Bruce C. Petersen, 1984. "Dynamic Limit Pricing and Internal Finance," Discussion Papers 603S, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
  6. Dixit, Avinash, 1979. "The Role of Investment in Entry-Deterrence," The Warwick Economics Research Paper Series (TWERPS) 140, University of Warwick, Department of Economics.
  7. Salant, Stephen W & Switzer, Sheldon & Reynolds, Robert J, 1983. "Losses from Horizontal Merger: The Effects of an Exogenous Change in Industry Structure on Cournot-Nash Equilibrium," The Quarterly Journal of Economics, MIT Press, vol. 98(2), pages 185-99, May.
  8. J. Tirole & E. Maskin, 1982. "A Theory of Dynamic Oligopoly, I: Overview and Quantity Competition with Large-Fixed Costs," Working papers 320, Massachusetts Institute of Technology (MIT), Department of Economics.
  9. Gaskins, Darius Jr., 1971. "Dynamic limit pricing: Optimal pricing under threat of entry," Journal of Economic Theory, Elsevier, vol. 3(3), pages 306-322, September.
  10. Kydland, Finn, 1979. " A Dynamic Dominant Firm Model of Industry Structure," Scandinavian Journal of Economics, Wiley Blackwell, vol. 81(3), pages 355-66.
  11. Kwang-Soo Cheong, . "Mergers and Dynamic Oligopoly," Computing in Economics and Finance 1997 126, Society for Computational Economics.
  12. Holmes, Thomas J., 1996. "Can consumers benefit from a policy limiting the market share of a dominant firm?," International Journal of Industrial Organization, Elsevier, vol. 14(3), pages 365-387, May.
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Cited by:
  1. Atallah, Gamal, 2007. "Monopolization through endogenous vertical mergers," Research in Economics, Elsevier, vol. 61(2), pages 99-104, June.
  2. Inés Macho-Stadler & David Pérez-Castrillo & Nicolás Porteiro, 2006. "Sequential Formation of Coalitions through Bilateral Agreements in a Cournot Setting," Working Papers 06.01, Universidad Pablo de Olavide, Department of Economics.
  3. Inés Macho-Stadler & David Pérez-Castrillo & Nicolás Porteiro, 2003. "Sequential Formation of Coalitions through Bilateral Agreements," Working Papers 84, Barcelona Graduate School of Economics.

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