Competition and Efficiency in Congested Markets
We study the efficiency of oligopoly equilibria in congested markets. The motivating examples are the allocation of network flows in a communication network or of traffic in a transportation network. We show that increasing competition among oligopolists can reduce efficiency, measured as the difference between users' willingness to pay and delay costs. We characterize a tight bound of 5/6 on efficiency in pure strategy equilibria. This bound is tight even when the number of routes and oligopolists is arbitrarily large. We also study the efficiency properties of mixed strategy equilibria.
|Date of creation:||Mar 2005|
|Date of revision:|
|Publication status:||published as Acemoglu, Daron and Asuman Ozdaglar. "Competition and Efficiency in Congested Markets." Mathematics of Operations Research 32 (February 2007): 1-31.|
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- Correa, Jose R. & Schulz, Andreas S. & Stier Moses, Nicolas E., 2003. "Selfish Routing in Capacitated Networks," Working papers 4319-03, Massachusetts Institute of Technology (MIT), Sloan School of Management.
- Benassy, Jean-Pascal, 1989. "Market Size and Substitutability in Imperfect Competition: A Bertrand-Edgeworth-Chamberlin Model," Review of Economic Studies, Wiley Blackwell, vol. 56(2), pages 217-34, April.
- Wilson, Robert, 1997. "Nonlinear Pricing," OUP Catalogue, Oxford University Press, number 9780195115826.
- Vives, Xavier, 1985. "On the efficiency of Bertrand and Cournot equilibria with product differentation," Journal of Economic Theory, Elsevier, vol. 36(1), pages 166-175, June.
- Hart, Oliver D, 1979. "Monopolistic Competition in a Large Economy with Differentiated Commodities," Review of Economic Studies, Wiley Blackwell, vol. 46(1), pages 1-30, January.
- Roberts, Donald John & Postlewaite, Andrew, 1976. "The Incentives for Price-Taking Behavior in Large Exchange Economies," Econometrica, Econometric Society, vol. 44(1), pages 115-27, January.
- Dasgupta, Partha & Maskin, Eric, 1986. "The Existence of Equilibrium in Discontinuous Economic Games, I: Theory," Review of Economic Studies, Wiley Blackwell, vol. 53(1), pages 1-26, January.
- Novshek, William, 1985.
"Perfectly competitive markets as the limits of cournot markets,"
Journal of Economic Theory,
Elsevier, vol. 35(1), pages 72-82, February.
- Novshek, William., 1983. "Perfectly Competitive Markets as the Limits of Cournot Markets," Working Papers 499, California Institute of Technology, Division of the Humanities and Social Sciences.
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