Farsighted Stability in Competition Between On-Demand Service Platforms

竞赛(生物学) 理论(学习稳定性) 产业组织 业务 服务(商务) 经济 计算机科学 营销 生态学 生物 机器学习
作者
Hongqiao Chen,Pengfei Guo,Qingying LI,Yulan Wang
出处
期刊:Social Science Research Network [Social Science Electronic Publishing]
标识
DOI:10.2139/ssrn.4238670
摘要

We consider service competition between two platforms, who are assumed to be farsighted, i.e., they consider the chains of reactions following their initial deviation. We first investigate the one-sided competition where the supply-side capacities of two platforms are fixed and then proceed to the two-sided competition where the two platforms are competing on both the supply and demand sides. We aim to derive farsightedly stable outcomes referred as the von Neumann-Morgenstern farsighted stable set (vNM FSS), a problem boiling down to finding the Pareto efficient strategies which indirectly dominate other strategies. To that end, we construct auxiliary decision problems for each platform where they make price decisions for the customers and wage decisions for the workers, subject to a subgame workers-customers equilibrium. We obtain each platform’s price and wage decisions by analyzing the Karush-Kuhn-Tucker conditions. We show that, in sharp contrast to the “winner-take-all” outcome predicted by the Nash equilibrium (myopic) solution concept, both platforms can survive competition under the farsightedly stable outcomes. We also find that, in contrast to the myopic solution which may leave either customers or workers a positive surplus, farsightedness behavior of platforms fully extracts the surplus from both customers and workers. Our analysis reveals that, in the one-sided competition, myopic stable outcome (i.e., Nash equilibrium) is consistent with the farsighted stable outcome in most of cases. However, in the two-sided competition, they are totally different. We also demonstrate that even though platforms are farsighted, the stable outcome cannot yield the monopolistic profit for the two platforms.

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