Brands matter. In modern times, brands and brand management have become a central feature of the modern economy and a staple of business theory and business practice. Coca-Cola, Nike, Google, Disney, Apple, Microsoft, BMW, Marlboro, IBM, Kellogg’s, Louis-Vuitton, and Virgin are all large...

Many online businesses, including most of the largest platforms, seek and provide attention. These online attention rivals provide products and features to obtain the attention of consumers and sell some of that attention, through other products and services, to merchants, developers and others...

The law and economics literature on the tragedy of the anticommons suggests that producers of complementary goods should integrate themselves. Recent decisions by the antitrust authorities seem to indicate that there is tradeoff between the “tragedy” and the lack of competition which might...

While competition between firms producing substitutes is well understood, less is known about rivalry between complementors. We study the interaction between firms in markets with one-way essential complements. One good is essential to the use of the other but not vice versa, as arises with an...

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...

This article provides an overview of the competitive issues surrounding online platforms. The general theme is that while much has been made of the structural features of online platforms there is little hard evidence that these are durable monopolies. Nonetheless, there are concerns about the...

Market power on each side of a multisided platform, whether in the form of increasing prices or decreasing quality, is constrained by the risk of losing sales on the other sides. That tends to weaken market power on each side and encourages platforms to keep prices lower and quality higher than...

The U.S. health care system is organized around markets. There has, however, been ongoing concern about the functioning of these markets, so much so that some have despaired of these markets working at all. The policy response to this concern has been disjointed. Health care markets are subject...

The U.S. health care system is organized around markets. There has, however, been ongoing concern about the functioning of these markets, so much so that some have despaired of these markets working at all. The policy response to this concern has been disjointed. Health care markets are subject...

In this chapter we review issues relating to antitrust and competition in health care markets. The chapter begins with a brief review of antitrust legislation. We then discuss whether and how health care is different from other industries in ways that might affect the optimality of competition....