Monopoly Myths: Do Internet Platforms Threaten Competition?
The rapid growth of large platforms has caused some activists, scholars, and political officials to worry about their impact on competition. Concern seems to be aimed at two issues. First, certain companies, such as Amazon, sell directly to customers but also run a platform that connects third-party suppliers to customers. Some people are concerned that platforms could compete unfairly by using data about sales by third-party sellers to decide whether to develop and sell competing products. Second, because of network effects, many platform markets have one or two dominant players.