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Common Ownership with Downstream Firm's Voluntary Investment

Author

Listed:
  • Qing Hu

    (Kansai University)

  • Ryo Masuyama

    (Kushiro Public University of Economics)

  • Tomomichi Mizuno

    (Kobe University)

Abstract

It is well known that common ownership lessens competition, which tends to decrease consumer and total surpluses. This study challenges this well known result by introducing downstream firms' voluntary investment. We consider a vertical market with one upstream firm and two downstream firms, where the downstream firms engage in voluntary investment that can reduce the upstream firm's marginal cost. We show that common ownership may increase the consumer and total surpluses if the upstream marginal cost without investment is sufficiently high and the investment is sufficiently efficient. We also find our results are robust even in the market with two supply chains.

Suggested Citation

  • Qing Hu & Ryo Masuyama & Tomomichi Mizuno, 2025. "Common Ownership with Downstream Firm's Voluntary Investment," Discussion Papers 2520, Graduate School of Economics, Kobe University.
    • Handle: RePEc:koe:wpaper:2520
    as

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    File URL: http://www.econ.kobe-u.ac.jp/RePEc/koe/wpaper/2025/2520.pdf
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    References listed on IDEAS

    as
    1. Xavier Vives & Orestis Vravosinos, 2025. "Free Entry in a Cournot Market with Overlapping Ownership," American Economic Journal: Microeconomics, American Economic Association, vol. 17(2), pages 292-320, May.
    2. Lili Xu & Yidan Zhang & Toshihiro Matsumura, 2023. "Competition mode and common ownership in a mixed oligopoly," Manchester School, University of Manchester, vol. 91(4), pages 306-319, July.
    3. Brito, Duarte & Ribeiro, Ricardo & Vasconcelos, Helder, 2020. "Overlapping ownership, endogenous quality, and welfare," Economics Letters, Elsevier, vol. 190(C).
    4. Qing Hu & Aika Monden & Tomomichi Mizuno, 2022. "Downstream Cross‐Holdings and Upstream R&D," Journal of Industrial Economics, Wiley Blackwell, vol. 70(3), pages 775-789, September.
    5. Hao Cheng & Xiaoyuan Ding & Chenhang Zeng, 2024. "Cross-ownership on R&D and welfare in a mixed oligopoly: revisiting with convex cost," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 33(6), pages 819-829, August.
    6. Mingqing Xing & Leonard F.S. Wang & Chan Zhou, 2024. "Cross-ownership on R&D and social welfare in mixed oligopoly," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 33(2), pages 206-217, February.
    7. Jumpei Hamamura & Yusuke Zennyo, 2021. "Retailer voluntary investment against a threat of manufacturer encroachment," Marketing Letters, Springer, vol. 32(4), pages 379-395, December.
    8. Yasuhiro Arai & Noriaki Matsushima, 2023. "The impacts of suppliers and mutual outsourcing on organizational forms," Canadian Journal of Economics/Revue canadienne d'économique, John Wiley & Sons, vol. 56(1), pages 114-132, February.
    9. Sato, Susumu & Matsumura, Toshihiro, 2020. "Free entry under common ownership," Economics Letters, Elsevier, vol. 195(C).
    10. Aika Monden & Tomomichi Mizuno, 2023. "Unprofitable Common Ownership with Asymmetric Distribution Channels," Discussion Papers 2317, Graduate School of Economics, Kobe University.
    11. Ángel L. López & Xavier Vives, 2019. "Overlapping Ownership, R&D Spillovers, and Antitrust Policy," Journal of Political Economy, University of Chicago Press, vol. 127(5), pages 2394-2437.
    12. Linfeng Chen & Toshihiro Matsumura & Chenhang Zeng, 2024. "Welfare Consequence of Common Ownership in a Vertically Related Market," Journal of Industrial Economics, Wiley Blackwell, vol. 72(2), pages 996-1004, June.
    13. Li, Youping & Zhang, Jianhu, 2021. "Product positioning with overlapping ownership," Economics Letters, Elsevier, vol. 208(C).
    14. Yake Jin & Arijit Mukherjee & Chenhang Zeng, 2024. "Downstream Cross‐Holdings and Upstream R&D: A Comment," Journal of Industrial Economics, Wiley Blackwell, vol. 72(4), pages 1360-1368, December.
    15. Joseph Farrell & Carl Shapiro, 1990. "Asset Ownership and Market Structure in Oligopoly," RAND Journal of Economics, The RAND Corporation, vol. 21(2), pages 275-292, Summer.
    16. Oz Shy & Rune Stenbacka, 2020. "Common ownership, institutional investors, and welfare," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 29(3), pages 706-723, July.
    17. Jie Shuai & Mengyuan Xia & Chenhang Zeng, 2023. "Upstream market structure and downstream partial ownership," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 32(1), pages 22-47, January.
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