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The merger paradox in a mixed oligopoly


  • Artz, Benjamin
  • Heywood, John S.
  • McGinty, Matthew


This paper examines the set of surplus maximizing mergers in a model of mixed oligopoly. The presence of a welfare maximizing public firm reduces the set of mergers for which two private firms can profitably merge. When a public firm and private firm merge, the changes in welfare and profit depend on the resulting extent of private ownership in the newly merged firm. When the government sets that share to maximize post merger welfare as assumed in the privatization literature, the merger paradox will often remain and the merger will not take place. Yet, we show there always exists scope for mergers that increase profit and increase (if not maximize) welfare. Interestingly, these mergers often include complete privatization.

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  • Artz, Benjamin & Heywood, John S. & McGinty, Matthew, 2009. "The merger paradox in a mixed oligopoly," Research in Economics, Elsevier, vol. 63(1), pages 1-10, March.
  • Handle: RePEc:eee:reecon:v:63:y:2009:i:1:p:1-10

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    References listed on IDEAS

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    Cited by:

    1. Kazuhiro Ohnishi, 2014. "Sequential Mixed Competition with a Foreign Joint-stock Firm," International Journal of Social Sciences and Management Studies (IJSSMS), The Economics and Social Development Organization (TESDO), vol. 1(2), pages 38-52, June.
    2. Bougette, Patrice, 2010. "Preventing merger unilateral effects: A Nash-Cournot approach to asset divestitures," Research in Economics, Elsevier, vol. 64(3), pages 162-174, September.
    3. Heywood, John S. & McGinty, Matthew, 2011. "Cross-border mergers in a mixed oligopoly," Economic Modelling, Elsevier, vol. 28(1-2), pages 382-389, January.
    4. Sami Debbichi & Walid Hichri, 2014. "Market Power and Collusion on Interconnection Phone Market in Tunisia : What Lessons from International Experiences," Working Papers halshs-00956638, HAL.
    5. repec:ipg:wpaper:2014-580 is not listed on IDEAS
    6. Sami Debbichi & Walid Hichri, 2013. "Threshold of Preference for Collusion and Interconnection Fees in Different Market Structures : the Tunisian Mobile Market Case," Working Papers 1307, Groupe d'Analyse et de Théorie Economique Lyon St-Étienne (GATE Lyon St-Étienne), Université de Lyon.
    7. Kadohognon Sylvain Ouattara, 2015. "Incentives to merge in asymmetric mixed oligopoly," Economics Bulletin, AccessEcon, vol. 35(2), pages 885-895.
    8. Sylvain Kadohognon Ouattara, 2011. "Incitations à fusionner dans un oligopole mixte asymétrique," Economics Working Paper Archive (University of Rennes 1 & University of Caen) 201126, Center for Research in Economics and Management (CREM), University of Rennes 1, University of Caen and CNRS.
    9. Gelves, J. Alejandro & Heywood, John S., 2013. "Privatizing by merger: The case of an inefficient public leader," International Review of Economics & Finance, Elsevier, vol. 27(C), pages 69-79.


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