Group Buying Between Competitors: Exogenous and Endogenous Power Structures

斯塔克伯格竞赛 竞争对手分析 结果(博弈论) 古诺竞争 激励 纳什均衡 优势(遗传学) 背景(考古学) 业务 博弈论 竞赛(生物学) 风险主导 微观经济学 产业组织 经济 最佳反应 ε平衡 古生物学 生态学 生物化学 化学 管理 生物 基因
作者
Ke Fu,Guoming Lai,Weixin Shang,Jiayan Xu
出处
期刊:Production and Operations Management [Wiley]
卷期号:33 (10): 1997-2013 被引量:6
标识
DOI:10.1177/10591478241265483
摘要

Competing firms may engage in group buying (GB) to benefit from a quantity discount from a common supplier. We study GB under different power structures (i.e., Nash and Stackelberg) and investigate how the power structures can be endogenized along with the resulting GB outcome. We employ a game-theoretic framework in which two firms under Cournot competition can group their purchases if it is beneficial compared to individual purchasing. We show that under exogenous power structures, when the two firms have highly asymmetric market bases, Nash GB is unattainable due to severe co-opetition conflict, and Stackelberg GB can better resolve the conflict. Our results suggest that power structures may fundamentally affect firms’ GB incentives, and no power structure is always superior to others. We then endogenize the power structures of the two firms based on a two-stage extended game. Using Pareto-risk dominance, we identify conditions under which one firm endogenously emerges as the Stackelberg leader with the rival as the follower, as well as the conditions under which both firms endogenously choose Nash GB or opt for independent purchasing. We demonstrate that the two firms can largely resolve the battle for GB leadership and achieve an efficient outcome in most cases. Our study is the first to compare different exogenous power structures and consider endogenous power structures in the context of GB.
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