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Network effects, aftermarkets and the Coase conjecture: A dynamic Markovian approach

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  • Didier Laussel

    (GREQAM - Groupement de Recherche en Économie Quantitative d'Aix-Marseille - EHESS - École des hautes études en sciences sociales - AMU - Aix Marseille Université - ECM - École Centrale de Marseille - CNRS - Centre National de la Recherche Scientifique)

  • Ngo van Long
  • Joana Resende

    (CORE - Center of Operation Research and Econometrics [Louvain] - UCL - Université Catholique de Louvain = Catholic University of Louvain, CETE - Universidade do Porto = University of Porto)

Abstract

This paper investigates the expansion of the network of a monopolist firm that produces a durable good and is also involved in the corresponding aftermarket. We characterize the Markov Perfect Equilibrium of the continuous time dynamic game played by the monopolist and the forward-looking consumers, under the assumption that consumers benefit from the subsequent expansion of the network. The paper contributes to the theoretical discussion on the validity of the Coase conjecture, analyzing whether Coase's prediction that the monopolist serves the market in a "twinkling of an eye" remains valid in our setup. We conclude that the equilibrium network development may actually be gradual, contradicting Coase's conjecture. We find that a necessary condition for such a result is the existence of aftermarket network effects that accrue (at least partly) to the monopolist firm.

Suggested Citation

  • Didier Laussel & Ngo van Long & Joana Resende, 2015. "Network effects, aftermarkets and the Coase conjecture: A dynamic Markovian approach," Post-Print hal-01457339, HAL.
  • Handle: RePEc:hal:journl:hal-01457339
    DOI: 10.1016/j.ijindorg.2015.06.001
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    Cited by:

    1. Didier Laussel & Ngo V. Long & Joana Resende, 2020. "The curse of knowledge: having access to customer information can reduce monopoly profits," RAND Journal of Economics, RAND Corporation, vol. 51(3), pages 650-675, September.
    2. Rabah Amir & Igor Evstigneev & Adriana Gama, 2021. "Oligopoly with network effects: firm-specific versus single network," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 71(3), pages 1203-1230, April.
    3. Didier Laussel & Ngo Van Long & Joana Resende, 2022. "Dynamic monopoly and consumers profiling accuracy," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 31(3), pages 579-608, August.
    4. Ngo Long, 2015. "Dynamic Games Between Firms and Infinitely Lived Consumers: A Review of the Literature," Dynamic Games and Applications, Springer, vol. 5(4), pages 467-492, December.
    5. Didier Laussel & Ngo Long & Joana Resende, 2022. "Asymmetric Information and Differentiated Durable Goods Monopoly: Intra-Period Versus Intertemporal Discrimination," Dynamic Games and Applications, Springer, vol. 12(2), pages 574-607, June.
    6. Jorge Padilla & Joe Perkins & Salvatore Piccolo, 2020. "Self-Preferencing in Markets with Vertically-Integrated Gatekeeper Platforms," CSEF Working Papers 582, Centre for Studies in Economics and Finance (CSEF), University of Naples, Italy.
    7. Laussel, Didier & Long, Ngo Van & Resende, Joana, 2020. "Quality and price personalization under customer recognition: A dynamic monopoly model with contrasting equilibria," Journal of Economic Dynamics and Control, Elsevier, vol. 114(C).
    8. Tamás Sebestyén & Balázs Szabó, 2022. "Market interaction structure and equilibrium price heterogeneity in monopolistic competition," Netnomics, Springer, vol. 22(2), pages 259-282, October.
    9. Jorge Padilla & Joe Perkins & Salvatore Piccolo, 2022. "Self‐Preferencing in Markets with Vertically Integrated Gatekeeper Platforms," Journal of Industrial Economics, Wiley Blackwell, vol. 70(2), pages 371-395, June.

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    More about this item

    Keywords

    Aftermarkets; Coase conjecture; Durable good; Network externalities;
    All these keywords.

    JEL classification:

    • L12 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Monopoly; Monopolization Strategies
    • L14 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Transactional Relationships; Contracts and Reputation

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