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Cartel Formation with Quality Differentiation

Author

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  • Bos, Iwan
  • Marini, Marco A.
  • Saulle, Riccardo

Abstract

Research on collusion in vertically differentiated markets is conducted under one or two potentially restrictive assumptions. Either there is a single industry-wide cartel or costs are assumed to be independent of quality or quantity. We explore the extent to which these assumptions are indeed restrictive by relaxing both. For a wide range of coalition structures, profit-maximizing cartels of any size price most of their lower quality products out of the market as long as production costs do not increase too much with quality. If these costs rise sufficiently, however, then market share is maintained for all product variants. All cartel sizes may emerge in equilibrium when exclusively considering individual deviations, but the industry-wide cartel is the only one immune to deviations by coalitions of members. Overall, our findings suggest that firms have a strong incentive to coordinate prices when the products involved are vertically differentiated.

Suggested Citation

  • Bos, Iwan & Marini, Marco A. & Saulle, Riccardo, 2019. "Cartel Formation with Quality Differentiation," MPRA Paper 97820, University Library of Munich, Germany.
    • Handle: RePEc:pra:mprapa:97820
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    References listed on IDEAS

    as
    1. Bos, Iwan & Marini, Marco A., 2019. "Cartel stability under quality differentiation," Economics Letters, Elsevier, vol. 174(C), pages 70-73.
    2. Giulio Ecchia & Luca Lambertini, 1997. "Minimum Quality Standards and Collusion," Journal of Industrial Economics, Wiley Blackwell, vol. 45(1), pages 101-113, March.
    3. Gabszewicz Jean J. & Marini Marco A. & Tarola Ornella, 2019. "Endogenous Mergers in Markets with Vertically Differentiated Products," The B.E. Journal of Theoretical Economics, De Gruyter, vol. 19(1), pages 1-22, January.
    4. Bonnet, Céline & Bouamra-Mechemache, Zohra, 2019. ""Yogurt Cartel" of Private Label Providers in France: impact on prices and welfare," TSE Working Papers 19-1012, Toulouse School of Economics (TSE).
    5. Luis C. Corchón & Marco A. Marini (ed.), 2018. "Handbook of Game Theory and Industrial Organization, Volume I," Books, Edward Elgar Publishing, number 16873.
    6. Gabszewicz, Jean J. & Marini, Marco A. & Tarola, Ornella, 2017. "Vertical differentiation and collusion: Pruning or proliferation?," Research in Economics, Elsevier, vol. 71(1), pages 129-139.
    7. Gabszewicz, Jean J. & Marini, Marco A. & Tarola, Ornella, 2016. "Core existence in vertically differentiated markets," Economics Letters, Elsevier, vol. 149(C), pages 28-32.
    8. Jaskold Gabszewicz, Jean & Shaked, Avner & Sutton, John & Thisse, Jacques-Francois, 1986. "Segmenting the market: The monopolist's optimal product mix," Journal of Economic Theory, Elsevier, vol. 39(2), pages 273-289, August.
    9. Champsaur, Paul & Rochet, Jean-Charles, 1989. "Multiproduct Duopolists," Econometrica, Econometric Society, vol. 57(3), pages 533-557, May.
    10. Avner Shaked & John Sutton, 1982. "Relaxing Price Competition Through Product Differentiation," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 49(1), pages 3-13.
    11. Marco A. Marini, 2018. "Collusive agreements in vertically differentiated markets," Chapters, in: Luis C. Corchón & Marco A. Marini (ed.), Handbook of Game Theory and Industrial Organization, Volume II, chapter 3, pages 34-56, Edward Elgar Publishing.
    12. Mussa, Michael & Rosen, Sherwin, 1978. "Monopoly and product quality," Journal of Economic Theory, Elsevier, vol. 18(2), pages 301-317, August.
    13. Fershtman, Chaim & Gandal, Neil, 1994. "Disadvantageous semicollusion," International Journal of Industrial Organization, Elsevier, vol. 12(2), pages 141-154, June.
    14. repec:bla:jindec:v:45:y:1997:i:1:p:101-13 is not listed on IDEAS
    15. Gabrielle Demange, 2017. "The stability of group formation," Revue d'économie politique, Dalloz, vol. 127(4), pages 495-516.
    16. Symeonidis, George, 1999. "Cartel stability in advertising-intensive and R&D-intensive industries," Economics Letters, Elsevier, vol. 62(1), pages 121-129, January.
    17. Demange, Gabrielle, 1994. "Intermediate preferences and stable coalition structures," Journal of Mathematical Economics, Elsevier, vol. 23(1), pages 45-58, January.
    18. Iwan Bos & Joseph E. Harrington, Jr, 2010. "Endogenous cartel formation with heterogeneous firms," RAND Journal of Economics, RAND Corporation, vol. 41(1), pages 92-117, March.
    19. Jaskold Gabszewicz, J. & Thisse, J. -F., 1979. "Price competition, quality and income disparities," Journal of Economic Theory, Elsevier, vol. 20(3), pages 340-359, June.
    20. Luis C. Corchón & Marco A. Marini (ed.), 2018. "Handbook of Game Theory and Industrial Organization, Volume II," Books, Edward Elgar Publishing, number 17978.
    21. Gabszewicz, Jean J. & Marini, Marco A. & Tarola, Ornella, 2016. "Vertical Differentiation and Collusion: Cannibalization or Proliferation?," ETA: Economic Theory and Applications 232221, Fondazione Eni Enrico Mattei (FEEM).
    22. Donsimoni, Marie-Paule, 1985. "Stable heterogeneous cartels," International Journal of Industrial Organization, Elsevier, vol. 3(4), pages 451-467, December.
    23. Marini, Marco A. & Corchon, Luis, 2016. "Handbook of Game Theory and Industrial Organization: An Introduction," MPRA Paper 77169, University Library of Munich, Germany.
    24. Dreze, J H & Greenberg, J, 1980. "Hedonic Coalitions: Optimality and Stability," Econometrica, Econometric Society, vol. 48(4), pages 987-1003, May.
    25. repec:bla:jindec:v:47:y:1999:i:2:p:221-30 is not listed on IDEAS
    26. Hart, Sergiu & Kurz, Mordecai, 1983. "Endogenous Formation of Coalitions," Econometrica, Econometric Society, vol. 51(4), pages 1047-1064, July.
    27. Hackner, Jonas, 1994. "Collusive pricing in markets for vertically differentiated products," International Journal of Industrial Organization, Elsevier, vol. 12(2), pages 155-177, June.
    Full references (including those not matched with items on IDEAS)

    Citations

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    Cited by:

    1. Iwan Bos & Marco A. Marini, 2022. "Collusion in quality‐segmented markets," Journal of Public Economic Theory, Association for Public Economic Theory, vol. 24(2), pages 293-323, April.
    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. Amit Gayer, 2023. "Duopoly and Endogenous Single Product Quality Strategies," Games, MDPI, vol. 14(4), pages 1-11, August.
    4. Döpper, Hendrik & Rasch, Alexander, 2024. "Combinable products, price discrimination, and collusion," International Journal of Industrial Organization, Elsevier, vol. 94(C).
    5. Martin, Simon & Schmal, W. Benedikt, 2021. "Collusive compensation schemes aided by algorithms," DICE Discussion Papers 375, Heinrich Heine University Düsseldorf, Düsseldorf Institute for Competition Economics (DICE).
    6. Leonardo Madio & Aldo Pignataro, 2022. "Collusion Sustainability with a Capacity Constrained Firm," CESifo Working Paper Series 10170, CESifo.
    7. Innocenti, Federico & Menicucci, Domenico, 2021. "Partial compatibility in oligopoly," Journal of Economic Behavior & Organization, Elsevier, vol. 188(C), pages 351-378.
    8. Bovin, Andreas & Bos, Iwan, 2023. "Market Shares as Collusive Marker: Evidence from the European Truck Industry," Research Memorandum 011, Maastricht University, Graduate School of Business and Economics (GSBE).
    9. Stanislav Stoykov & Ivan Kostov, 2023. "Price Competition with Differentiated Products on a Two-Dimensional Plane: The Impact of Partial Cartel on Firms’ Profits and Behavior," Games, MDPI, vol. 14(2), pages 1-25, March.

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    More about this item

    Keywords

    Cartel Formation; Collusion; Vertical Differentiation; Endogenous Coalition Formation; Industry-wide Cartel; Partial Cartels.;
    All these keywords.

    JEL classification:

    • C70 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - General
    • C71 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Cooperative Games
    • C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
    • D0 - Microeconomics - - General
    • D01 - Microeconomics - - General - - - Microeconomic Behavior: Underlying Principles
    • D02 - Microeconomics - - General - - - Institutions: Design, Formation, Operations, and Impact
    • D04 - Microeconomics - - General - - - Microeconomic Policy: Formulation; Implementation; Evaluation
    • D4 - Microeconomics - - Market Structure, Pricing, and Design
    • D42 - Microeconomics - - Market Structure, Pricing, and Design - - - Monopoly
    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection

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