Intercommection Incentives of a Large Network Facing Multiple Rivals

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Intercommection Incentives of a Large Network Facing Multiple Rivals

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David A. Malueg & Marius Schwartz () (Department of Economics, Georgetown University)

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David A. Malueg

Abstract

This paper extends Cremer, Rey and Tirole's analysis of whether a firm with the most installed-base customers, in a market exhibiting network externalities, gains by degrading interconnection with rivals that compete with it for new customers. We allow any number of rivals and consider both tipping equilibria and interior equlibria. Degrading interconnection can yield tipping away from the largest network even if its installed-base share exceeds one half. For all parameter values (including those that admit interior equilibria), a share above one half is necessary but not sufficient to ensure degradation is profitable. Greater scope for market expansion-a lower marginal cost or smaller installed-base relative to potential additional demand-makes profitable degradation less likely.

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Paper provided by Georgetown University, Department of Economics in its series Working Papers with number gueconwpa~03-03-01.

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Handle: RePEc:geo:guwopa:gueconwpa~03-03-01

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David A. Malueg & Marius Schwartz, 2001. "Interconnection Incentives of a Large Network," Working Papers gueconwpa~01-01-11, Georgetown University, Department of Economics. [Downloadable!]
Katz, Michael L & Shapiro, Carl, 1985. "Network Externalities, Competition, and Compatibility," American Economic Review, American Economic Association, vol. 75(3), pages 424-40, June. [Downloadable!] (restricted)
Katz, Michael L & Shapiro, Carl, 1986. "Technology Adoption in the Presence of Network Externalities," Journal of Political Economy, University of Chicago Press, vol. 94(4), pages 822-41, August. [Downloadable!] (restricted)
Schwartz, Marius & Thompson, Earl A, 1986. "Divisionalization and Entry Deterrence," The Quarterly Journal of Economics, MIT Press, vol. 101(2), pages 307-21, May. [Downloadable!] (restricted)
Beard, T Randolph & Kaserman, David L & Mayo, John W, 2001. "Regulation, Vertical Integration and Sabotage," Journal of Industrial Economics, Blackwell Publishing, vol. 49(3), pages 319-33, September. [Downloadable!] (restricted)
Farrell, Joseph & Gallini, Nancy T, 1988. "Second-Sourcing as a Commitment: Monopoly Incentives to Attract Competition," The Quarterly Journal of Economics, MIT Press, vol. 103(4), pages 673-94, November. [Downloadable!] (restricted)
Other versions:
- Joseph Farrell and Nancy T. Gallini., 1986. "Second-Sourcing as a Commitment: Monopoly Incentives to Attract Competition," Economics Working Papers 8618, University of California at Berkeley.
- Joseph Farrell and Nancy T. Gallini., 1987. "Second-Sourcing as a Commitment: Monopoly Incentives to Attract Competition," Economics Working Papers 8760, University of California at Berkeley.

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