中文摘要：

基于双边市场理论,研究了互联网平台型企业的横向合并模式。结果表明：互联网平台型企业总是有动机率先进行横向合并以此来提高企业利润。当交叉网络外部性强度较小时,其他企业跟随合并总是占优策略;当交叉网络外部性强度较大时,只有在满足跟随合并产生的单位成本节约较大的前提下,跟随合并才是占优策略。率先做出横向合并决策的企业可以合并尽量多的企业,这不仅总能提高企业利润,而且当交叉网络外部性强度较大时,剩下的企业只能选择退出。

英文摘要：

Based on two-sided market theory, this paper studies the mode of horizontal merger of Internet platform enterpri- ses. Result shows that, internet platform enterprises always have incentive to take the lead in horizontal merger in order to increase profit. When intensity of cross network externality is weak, other enterprises＇ dominant strategy is always to choose horizontal merger. When intensity of cross network externality is strong, choosing horizontal merger will be dominant strategy only under the condition that unit cost saving generated by merger is relatively large. In order to respond to potential horizon- tal merger of other enterprises, the leader of horizontal merger can merge with more enterprises. This strategy is always fa- vorable to improve profit. What＇s more, the rest enterprises have to choose to exit when intensity of cross network externality is strong.