Apr. 21, 2024

部分的株式所有を伴う企業間提携の理論分析

森田穂高 (一橋大学経済研究所), 秋山薫平 (株式会社メンバーズデータアドベンチャーカンパニー), 荒知宏 (福島大学経済経営学類), 野口翔右 (Department of Economics, Rice University), アーゴ ゴーシュ (School of Economics, UNSW Business School, UNSW Sydney)

Inter-Firm Alliances Accompanied by Partial Equity Ownership: Theoretical Analyses

Hodaka Morita (Institute of Economic Research, Hitotsubashi University), Kumpei Akiyama (Members Data Adventure Co.), Tomohiro Ara (Faculty of Economics and Business Administration, Fukushima University), Shosuke Noguchi (Department of Economics, Rice University), Arghya Ghosh (School of Economics, UNSW Business School, UNSW Sydney)

要旨Abstract

 水平的競争関係にある企業間の部分的結合は,それら企業の市場支配力を高め当該産業における競争を制限することにより社会的弊害をもたらす可能性がある.一方,部分的結合はまた,結合企業間の知識移転を促進したり,生産量をコストの高い企業からコストの低い企業に一部シフトしたりすることで,社会的に正の影響を及ぼす可能性もある.本論文では,これら影響のトレードオフ関係を明示的に取り入れた寡占競争モデルとして,部分的結合と知識移転の関係に焦点を当てるGhosh and Morita(2017)および生産量のシフトに焦点を当てたAra, Ghosh and Morita(2021)のモデルを議論し,部分的結合水準が内生的に決定されるプロセスを明らかにするとともに,その競争政策上の含意を議論する.また,水平的競争関係にある複数の企業が資本と知識・ノウハウを出し合ってジョイントベンチャーを設立運営することも,間接的な意味でそれら企業間の部分的結合と考えられることから,知識移転と知識流出の相互連関のなかでジョイントベンチャーへの出資比率が内生的に定まるAkiyama(2021)の理論モデルを議論し,その競争政策上の含意を議論する.

 Partial equity ownership (PEO) between horizontally competing firms may have negative impacts on the society by increasing firms’ market power and weakening their competition. At the same time, PEO may also have positive impacts on the society by inducting knowledge transfer between competing firms and shifting outputs from a cost-ineffective firm to a cost-effective firm. As oligopoly models that explore the trade-off between these positive and negative impacts, we discuss the model of Ghosh and Morita (2017) that focuses on the link between PEO and knowledge transfer, and the model of Ara, Ghosh and Morita (2021) that focuses on the shift of outputs in international contexts, clarifying that process through which the level of PEO is endogenously determined in these models. We also discuss Akiyama’s (2021) model of joint venture (JV) in which two horizontally competing firms can establish a JV, exploring the process through which the ratio of JV’s equity ownership is endogenously determined. We discuss policy implications of these models.

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書誌情報Bibliographic information

Vol. 73, No. 2, 2022 , pp. 97-116
HERMES-IR(一橋大学機関リポジトリ): https://hdl.handle.net/10086/74153
JEL Classification Codes: L10, L40, L50