Two-sided platforms coordinate two types of users in order to increase the value of the whole system surrounding the platform. Users of a platform have different outside opportunities, and these influence their behavior on the platform. Platforms often limit these outside projects through...

We document entry and capacity expansion in US long-distance fiber-optic networks before and during the "telecom boom." We disentangle the many swaps and leases between networks in order to measure owned route miles versus route miles shared with other carriers. Entry appears much more moderate...

The recent growth of the Internet is creating markets for broadband telecommunications networks. In the past, virtually all such 'infrastructure' networks have been subject to government regulation. Two reasons advanced for this market intervention are (i) such networks constitute a natural...