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A Further Look at Two-way Network Competition in Telecommunications


  • Stefan Buehler

    () (Socioeconomic Institute, University of Zurich)


This paper develops a simple reduced form model of two-way network competition with linear retail pricing. Using the techniques of supermodular games, it is demonstrated that the most important results from the existing literature do not depend on routinely invoked assumptions, such as specific functional forms or the symmetry of the network operators. In particular, it is demonstrated that (i) firms do not need to be symmetric or regulated to have incentives to collude in access pricing, and (ii) due to the effects on social welfare, enforcing colluding firms to behave noncooperatively is not necessarily desirable.

Suggested Citation

  • Stefan Buehler, 1999. "A Further Look at Two-way Network Competition in Telecommunications," SOI - Working Papers 9904, Socioeconomic Institute - University of Zurich, revised Apr 2000.
  • Handle: RePEc:soz:wpaper:9904

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    References listed on IDEAS

    1. Nicholas Economides & Giuseppe Lopomo & Glenn Woroch, 1997. "Strategic Commitments and the Principle of Reciprocity in Interconnection Pricing," Industrial Organization 9701001, EconWPA.
    2. Jean-Jacques Laffont & Patrick Rey & Jean Tirole, 1998. "Network Competition: I. Overview and Nondiscriminatory Pricing," RAND Journal of Economics, The RAND Corporation, vol. 29(1), pages 1-37, Spring.
    3. McFadden, Daniel L., 1984. "Econometric analysis of qualitative response models," Handbook of Econometrics,in: Z. Griliches† & M. D. Intriligator (ed.), Handbook of Econometrics, edition 1, volume 2, chapter 24, pages 1395-1457 Elsevier.
    4. Armstrong, Mark & Doyle, Chris & Vickers, John, 1996. "The Access Pricing Problem: A Synthesis," Journal of Industrial Economics, Wiley Blackwell, vol. 44(2), pages 131-150, June.
    5. Paola Manzini & Marco Mariotti, 1997. "A Model of Bargaining with the Possibility of Arbitration," Game Theory and Information 9710001, EconWPA.
    6. Fudenberg, Drew & Tirole, Jean, 1984. "The Fat-Cat Effect, the Puppy-Dog Ploy, and the Lean and Hungry Look," American Economic Review, American Economic Association, vol. 74(2), pages 361-366, May.
    7. Amemiya, Takeshi, 1981. "Qualitative Response Models: A Survey," Journal of Economic Literature, American Economic Association, vol. 19(4), pages 1483-1536, December.
    8. Armstrong, Mark, 1998. "Network Interconnection in Telecommunications," Economic Journal, Royal Economic Society, vol. 108(448), pages 545-564, May.
    9. J. Gregory Sidak & William Baumol, 1994. "Toward Competition in Local Telephony," Books, American Enterprise Institute, number 52984.
    10. Michael Carter & Julian Wright, 1999. "Interconnection in Network Industries," Review of Industrial Organization, Springer;The Industrial Organization Society, vol. 14(1), pages 1-25, February.
    11. Jean-Jacques Laffont & Patrick Rey & Jean Tirole, 1998. "Network Competition: II. Price Discrimination," RAND Journal of Economics, The RAND Corporation, vol. 29(1), pages 38-56, Spring.
    12. Laffont, Jean-Jacques & Tirole, Jean, 1996. "Creating Competition through Interconnection: Theory and Practice," Journal of Regulatory Economics, Springer, vol. 10(3), pages 227-256, November.
    13. Shapiro, Carl, 1989. "Theories of oligopoly behavior," Handbook of Industrial Organization,in: R. Schmalensee & R. Willig (ed.), Handbook of Industrial Organization, edition 1, volume 1, chapter 6, pages 329-414 Elsevier.
    14. Katz, Michael L & Shapiro, Carl, 1985. "Network Externalities, Competition, and Compatibility," American Economic Review, American Economic Association, vol. 75(3), pages 424-440, June.
    15. Milgrom, Paul & Roberts, John, 1990. "Rationalizability, Learning, and Equilibrium in Games with Strategic Complementarities," Econometrica, Econometric Society, vol. 58(6), pages 1255-1277, November.
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    Cited by:

    1. Reto Foellmi & Urs Meister, 2005. "Product-Market Competition in the Water Industry: Voluntary Non-discriminatory Pricing," Journal of Industry, Competition and Trade, Springer, vol. 5(2), pages 115-135, June.

    More about this item


    interconnection; supermodularity; tacit collusion; telecommunications;

    JEL classification:

    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • K23 - Law and Economics - - Regulation and Business Law - - - Regulated Industries and Administrative Law
    • L43 - Industrial Organization - - Antitrust Issues and Policies - - - Legal Monopolies and Regulation or Deregulation
    • L51 - Industrial Organization - - Regulation and Industrial Policy - - - Economics of Regulation
    • L96 - Industrial Organization - - Industry Studies: Transportation and Utilities - - - Telecommunications


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