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On the relationship between product substitutability and tacit collusion

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  • Rajeev K. Tyagi

    (University of California, Irvine, CA, USA)

Abstract

This paper examines the effect of increased product substitutability on quantity-setting firms' ability to sustain tacit collusion in a market. It uses a general demand function and the trigger strategy of Friedman (Friedman JW. 1971. A non-cooperative equilibrium for supergames. Review of Economic Studies 38: 1-12) to show that while increased product substitutability hinders sustainability of tacit collusion in the case of linear and concave demand functions, it may either hinder or facilitate firms' ability to sustain tacit collusion in the case of convex demand functions. Thus, this paper adds to the growing view that one must use a case-by-case analysis in judging whether firms in more homogenous product markets find it easier or harder to tacitly collude. Copyright © 1999 John Wiley & Sons, Ltd.

Suggested Citation

  • Rajeev K. Tyagi, 1999. "On the relationship between product substitutability and tacit collusion," Managerial and Decision Economics, John Wiley & Sons, Ltd., vol. 20(6), pages 293-298.
    • Handle: RePEc:wly:mgtdec:v:20:y:1999:i:6:p:293-298
    DOI: 10.1002/(SICI)1099-1468(199909)20:6<293::AID-MDE941>3.0.CO;2-T
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    References listed on IDEAS

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    1. Deneckere, R., 1983. "Duopoly supergames with product differentiation," Economics Letters, Elsevier, vol. 11(1-2), pages 37-42.
    2. E. H. Chamberlin, 1929. "Duopoly: Value Where Sellers Are Few," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 44(1), pages 63-100.
    3. Fisher, Franklin M, 1987. "Horizontal Mergers: Triage and Treatment," Journal of Economic Perspectives, American Economic Association, vol. 1(2), pages 23-40, Fall.
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    Cited by:

    1. Raphael Thomadsen & Ki-Eun Rhee, 2007. "Costly Collusion in Differentiated Industries," Marketing Science, INFORMS, vol. 26(5), pages 660-665, 09-10.
    2. Leonardo Madio & Aldo Pignataro, 2022. "Collusion sustainability with a capacity constrained firm," "Marco Fanno" Working Papers 0295, Dipartimento di Scienze Economiche "Marco Fanno".
    3. Emilio Calvano & Giacomo Calzolari & Vincenzo Denicolò & Sergio Pastorello, 2020. "Artificial Intelligence, Algorithmic Pricing, and Collusion," American Economic Review, American Economic Association, vol. 110(10), pages 3267-3297, October.
    4. David R. Collie, 2006. "Collusion in Differentiated Duopolies with Quadratic Costs," Bulletin of Economic Research, Wiley Blackwell, vol. 58(2), pages 151-159, April.
    5. Piccolo, Salvatore & Pignataro, Aldo, 2018. "Consumer loss aversion, product experimentation and tacit collusion," International Journal of Industrial Organization, Elsevier, vol. 56(C), pages 49-77.
    6. Leonardo Madio & Aldo Pignataro, 2022. "Collusion Sustainability with a Capacity Constrained Firm," CESifo Working Paper Series 10170, CESifo.
    7. David Collie, 2004. "Collusion and the elasticity of demand," Economics Bulletin, AccessEcon, vol. 12(3), pages 1-6.
    8. Zimmerman, Paul R., 2010. "On the sustainability of collusion in Bertrand supergames with discrete pricing and nonlinear demand," MPRA Paper 20249, University Library of Munich, Germany.
    9. Osterdal, Lars Peter, 2003. "A note on the stability of collusion in differentiated oligopolies," Research in Economics, Elsevier, vol. 57(1), pages 53-64, March.
    10. Goto, Ujo & Iizuka, Toshiaki, 2016. "Cartel sustainability in retail markets: Evidence from a health service sector," International Journal of Industrial Organization, Elsevier, vol. 49(C), pages 36-58.
    11. Jeongeun Sim & Fouad El Ouardighi & Bowon Kim, 2019. "Economic and environmental impacts of vertical and horizontal competition and integration," Naval Research Logistics (NRL), John Wiley & Sons, vol. 66(2), pages 133-153, March.
    12. Stefano Colombo, 2013. "Product Differentiation and Collusion Sustainability When Collusion Is Costly," Marketing Science, INFORMS, vol. 32(4), pages 669-674, July.

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