【时间】2019年12月25日（周三）14:00-15:30

【地点】中国人民大学明德主楼0416

【主讲人】罗茸，美国佐治亚大学特里商学院经济系助理教授

【主题】Network Effect and Multi-Network Sellers' Dynamic Pricing: Evidence from the US Smartphone Market

【主持人】李三希，中国人民大学经济学院教授

【摘要】The smartphone operating system (OS) network effect influences the dynamic pricing strategy of the multi-OS telecom carriers. I show that multi-OS sellers choose lower prices for larger OSs, which is the opposite of single-OS sellers’strategy. Using product-level data in the US, I estimate a structural model of consumer demand and carriers’dynamic pricing game for two-year contract smartphones. With new methods, I solve the dynamic game involving asymmetric multi-product carriers and continuous state variables. The estimated network effect is significantly positive. Counterfactual analysis shows that, if the carriers were single-OS sellers, the OS market would be less concentrated and consumer surplus would decrease.

【主讲人介绍】罗茸，美国佐治亚大学特里商学院经济系助理教授，美国宾夕法尼亚州立大学经济学博士。研究领域为产业组织经济学，研究兴趣包括消费者需求，企业的静态与动态定价，产品的网络效应以及企业生产函数的理论与实证分析。

供稿:宋利芳;编辑:杨菲;核稿:陆美贺