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中国管理科学 ›› 2026, Vol. 34 ›› Issue (6): 261-274.doi: 10.16381/j.cnki.issn1003-207x.2023.2029cstr: 32146.14.j.cnki.issn1003-207x.2023.2029

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双边平台竞争下超级卖家的独家协议及其影响

陈海军, 徐琪()   

  1. 东华大学旭日工商管理学院,上海 200051
  • 收稿日期:2023-12-04 修回日期:2024-05-05 出版日期:2026-06-25 发布日期:2026-05-22
  • 通讯作者: 徐琪 E-mail:xuqi@dhu.edu.cn
  • 基金资助:
    国家社会科学基金项目(21BGL014);国家自然科学基金重点项目(71832001)

The Exclusivity of the Super Seller in Two-Sided Platform Competition

Haijun Chen, Qi Xu()   

  1. Glorious Sun School of Business and Management,Donghua University,Shanghai 200051,China
  • Received:2023-12-04 Revised:2024-05-05 Online:2026-06-25 Published:2026-05-22
  • Contact: Qi Xu E-mail:xuqi@dhu.edu.cn

摘要:

在双边市场中,供应侧的异质性和差异化策略催生了具有显著议价权的超级卖家,成为平台竞争的关键。平台方不能干涉经营者自主经营,但商家可以主动与平台达成独家协议。本研究构建了水平差异化的双边平台竞争模型,分析了超级卖家采取的独家与非独家策略,及其对平台竞争、普通卖家的市场参与以及双边用户福利的影响。研究发现,超级卖家的参与改变了市场均衡,提高了平台对消费者的定价能力,并影响了普通卖家的市场地位;此外,独家协议通过扩大用户基数和提高定价能力,提升平台竞争力;超级卖家在选择独家或非独家协议时,应综合考虑网络影响力和平台间的竞争强度。本文还发现,超级卖家的存在往往会降低普通卖家的总福利,而消费者则更倾向于超级卖家选择非独家协议。本文的主要贡献在于揭示了超级卖家及其排他性协议的影响机制,从而为超级卖家制定独家策略提供了理论指导,并向反垄断政策制定者提供政策建议。

关键词: 双边平台, 超级卖家, 独家协议, 竞争瓶颈, 网络效应

Abstract:

In two-sided markets, the heterogeneity on the supply side and differentiation strategies have given rise to a super seller with significant bargaining power, becoming a crucial player in platform competition. Platforms cannot interfere with the independent operation of merchants, but merchants can proactively enter into exclusive agreements with platforms. A horizontal differentiation model of two-sided platform competition is constructed, analyzing the impact of the super seller's adoption of exclusive and non-exclusive strategies on platform competition, market participation of ordinary sellers, and welfare of two-sided users. It is found that the participation of the super seller changes market equilibrium, enhances the platform's pricing power over consumers, and affects the market position of ordinary sellers. Additionally, exclusive agreements enhance platform competitiveness by expanding user base and increasing pricing power. When the super seller chooses exclusive or non-exclusive agreements, they should consider both network influence and the intensity of inter-platform competition. Furthermore, it is revealed that the presence of the super seller often reduces the total welfare of ordinary sellers, while consumers tend to prefer the super seller choosing non-exclusive agreements. The main contribution of this paper lies in elucidating the impact mechanism of the super seller and their exclusive agreements, thereby providing theoretical guidance for the super seller to formulate exclusive strategies and offering policy suggestions to antitrust policymakers.

Key words: two-sided platforms, super seller, exclusive agreements, competitive bottleneck, network effects

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