Switching costs and network effects bind customers to vendors if products are incompatible, locking customers or even markets in to early choices. Lock-in hinders customers from changing suppliers in response to (predictable or unpredictable) changes in efficiency, and gives vendors lucrative ex...

I present a new model of optimal dynamic pricing and diffusion of a network good sold by a monopolist. The good in this model is a social network good in that each consumer’s value of the good within a social network increases as more of her neighbors use the good. In each period, the...

Many Internet intermediaries operate two-sided networks, that is, they provide platforms to bring together two types of participants, or quot;sides,quot; such as buyers and sellers. This paper develops a model that characterizes the intermediary's pricing in two-sided networks, the value created...

I model dynamic product design along price and non-price dimensions by a firm in a market with positive network externalities between consumers. In the case of a usage fee, I provide conditions under which the steady state (SS) is unique and show that the introductory price is negative and...

Recent claims that online platforms have secured permanent monopolies, protected by barriers to entry from network effects and stockpiles of data, and should be the focus of intense antitrust and regulatory scrutiny, are inconsistent with the economics, technology, and history of online...

Should the FTC have allowed Zillow to acquire its foremost rival, Trulia? It is increasingly well-accepted that digital platforms tend toward dominance in their immediately adjacent relevant-product markets. Google, for example, has long held a majority share of the markets for general-search...