讲座主题：Regulating Information Sharing of Retail Platform

主讲嘉宾：王睿通 同济大学经济与管理学院

讲座时间：2025年10月24日周五14:00-16:00

讲座地点：沙河校区学院11号楼308

嘉宾简介： 王睿通，同济大学经管学院副教授，2020年毕业于明尼苏达大学卡尔森商学院市场营销系。他的研究领域为量化营销、渠道和平台反垄断。他的论文在Journal of Marketing Research和Marketing Science发表。

内容摘要：A platform's marketplace data can be utilized to improve product quality. The platform's role as an intermediary incentivizes the sharing of product-improvement information to support independent sellers, while its additional role as a seller creates a conflicting incentive to withhold valuable insights from competitors. This conflict of interest can result in self-preferencing, where the platform prioritizes using information to improve its own product, raising regulatory concerns. In this research, we build a game-theoretical model to study a dual-role platform's information sharing strategy and evaluate two regulatory measures designed to address self-preferencing. Our main findings are as follows. First, in a laissez-faire market, the platform engages in self-preferencing for high-value information while making low-value information accessible to all sellers. Second, prohibiting self-preferencing, as outlined in Article 6(2) of the Digital Markets Act (DMA), can (weakly) increase consumer surplus but may exacerbate market inefficiencies. Lastly, banning the platform from selling directly to consumers can encourage or discourage information sharing, leading to ambiguous impacts on consumer surplus and social welfare.  

本讲座由永利官网2025年专题学术讲座资助计划和青年科研创新团队支持。