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The Microsoft Acquisition of Activision: Neither Horizontal nor Vertical

Author

Listed:
  • Brianna Alderman

    (Harvard University)

  • Roger Blair

    (University of Florida)

  • Javier Donna

    (University of Miami)

Abstract

We study the Microsoft-Activision acquisition through the lens of a complementary-product merger. When two complementary good producers consolidate, the merger is not horizontal because the two firms do not produce substitutable goods. Nor is the merger vertical, as neither firm supplies the other. We develop an economic model to study these types of mergers that allows for the possibility of rivals exiting the market. Three main conclusions flow from our analysis. (1) The welfare effects of the Microsoft-Activision acquisition are ambiguous; they depend on several industry factors. (2) One will not obtain the correct welfare effects using an incorrect vertical structure; harm to consumers will typically be larger in a complementary-product merger relative to a vertical one. (3) Consumer harm associated with rivals’ exit due to the merger might substantially reduce welfare even if it is a welfare-enhancing merger absent exit. Our analysis provides an analytical roadmap for the antitrust enforcement authorities regarding the theories of harm in complementary-good mergers.

Suggested Citation

  • Brianna Alderman & Roger Blair & Javier Donna, 2025. "The Microsoft Acquisition of Activision: Neither Horizontal nor Vertical," Working Papers 359, Red Nacional de Investigadores en Economía (RedNIE).
    • Handle: RePEc:aoz:wpaper:359
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    File URL: https://rednie.eco.unc.edu.ar/files/DT/359.pdf
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    References listed on IDEAS

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    1. Oliver Hart & Jean Tirole, 1990. "Vertical Integration and Market Foreclosure," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 21(1990 Micr), pages 205-286.
    2. Jan De Loecker & Jan Eeckhout & Gabriel Unger, 2020. "The Rise of Market Power and the Macroeconomic Implications [“Econometric Tools for Analyzing Market Outcomes”]," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 135(2), pages 561-644.
    3. Gregory S. Crawford & Robin S. Lee & Michael D. Whinston & Ali Yurukoglu, 2018. "The Welfare Effects of Vertical Integration in Multichannel Television Markets," Econometrica, Econometric Society, vol. 86(3), pages 891-954, May.
    4. Javier D Donna & Pedro Pereira, 2023. "Rivals’ Exit and Vertical Merger Evaluation," Journal of Competition Law and Economics, Oxford University Press, vol. 19(2), pages 220-249.
    5. Robin S. Lee, 2013. "Vertical Integration and Exclusivity in Platform and Two-Sided Markets," American Economic Review, American Economic Association, vol. 103(7), pages 2960-3000, December.
    6. Akgün, Uğur & Caffarra, Cristina & Etro, Federico & Stillman, Robert, 2020. "On the welfare impact of mergers of complements: Raising rivals’ costs versus elimination of double marginalization," Economics Letters, Elsevier, vol. 195(C).
    7. Carl Shapiro, 2019. "Protecting Competition in the American Economy: Merger Control, Tech Titans, Labor Markets," Journal of Economic Perspectives, American Economic Association, vol. 33(3), pages 69-93, Summer.
    8. Farrell, Joseph & Shapiro, Carl, 2000. "Scale Economies and Synergies in Horizontal Merger Analysis," Department of Economics, Working Paper Series qt96z174x1, Department of Economics, Institute for Business and Economic Research, UC Berkeley.
    9. Julie H. Mortimer, 2008. "Vertical Contracts in the Video Rental Industry -super-1," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 75(1), pages 165-199.
    10. Farrell, Joseph & Shapiro, Carl, 2000. "Scale Economies and Synergies in Horizontal Merger Analysis," Competition Policy Center, Working Paper Series qt8v1500b8, Competition Policy Center, Institute for Business and Economic Research, UC Berkeley.
    11. Patrick Rey & Jean Tirole, 2019. "Price Caps as Welfare-Enhancing Coopetition," Journal of Political Economy, University of Chicago Press, vol. 127(6), pages 3018-3069.
    12. Joseph Farrell and Carl Shapiro., 2000. "Scale Economies and Synergies in Horizontal Merger Analysis," Economics Working Papers E00-291, University of California at Berkeley.
    13. David Autor & David Dorn & Lawrence F Katz & Christina Patterson & John Van Reenen, 2020. "The Fall of the Labor Share and the Rise of Superstar Firms [“Automation and New Tasks: How Technology Displaces and Reinstates Labor”]," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 135(2), pages 645-709.
    14. Pedro Pereira & Tiago Ribeiro, 2018. "Evaluating Partial Divestitures When Vertical Relations are Important," Review of Industrial Organization, Springer;The Industrial Organization Society, vol. 53(2), pages 321-345, September.
    15. Aviv Nevo, 2000. "Mergers with Differentiated Products: The Case of the Ready-to-Eat Cereal Industry," RAND Journal of Economics, The RAND Corporation, vol. 31(3), pages 395-421, Autumn.
    16. Etro, Federico, 2019. "Mergers of complements and entry in innovative industries," International Journal of Industrial Organization, Elsevier, vol. 65(C), pages 302-326.
    17. Shapiro, Carl, 2018. "Antitrust in a time of populism," International Journal of Industrial Organization, Elsevier, vol. 61(C), pages 714-748.
    18. Jay Pil Choi, 2008. "Mergers With Bundling In Complementary Markets," Journal of Industrial Economics, Wiley Blackwell, vol. 56(3), pages 553-577, September.
    19. Ordover, Janusz A & Saloner, Garth & Salop, Steven C, 1990. "Equilibrium Vertical Foreclosure," American Economic Review, American Economic Association, vol. 80(1), pages 127-142, March.
    20. Jean-Francois Houde, 2012. "Spatial Differentiation and Vertical Mergers in Retail Markets for Gasoline," American Economic Review, American Economic Association, vol. 102(5), pages 2147-2182, August.
    21. Kadner-Graziano, Alessandro S., 2023. "Mergers of Complements: On the Absence of Consumer Benefits," International Journal of Industrial Organization, Elsevier, vol. 89(C).
    22. Allen, Bruce T, 1971. "Vertical Integration and Market Foreclosure: The Case of Cement and Concrete," Journal of Law and Economics, University of Chicago Press, vol. 14(1), pages 251-274, April.
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    Keywords

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    JEL classification:

    • K21 - Law and Economics - - Regulation and Business Law - - - Antitrust Law
    • K41 - Law and Economics - - Legal Procedure, the Legal System, and Illegal Behavior - - - Litigation Process
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
    • L42 - Industrial Organization - - Antitrust Issues and Policies - - - Vertical Restraints; Resale Price Maintenance; Quantity Discounts
    • L44 - Industrial Organization - - Antitrust Issues and Policies - - - Antitrust Policy and Public Enterprise, Nonprofit Institutions, and Professional Organizations
    • L52 - Industrial Organization - - Regulation and Industrial Policy - - - Industrial Policy; Sectoral Planning Methods

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