The "parallel behavior is enough" standard cannot assist the courts in distinguishing horizontal agreements to restrain trade from normal competition. It would very likely impose significant costs on the economy by distorting competitive incentives and encouraging meritless litigation designed...

This paper reports significant discrepancies in the Census’s methods and reports of online and physical retail sales in the United States. We recommend material changes in how the Census Bureau reports e-commerce and physical sales reported to it. We also recommend that the Census commission...

U.S. v. Microsoft was mainly about the "browser war" between Microsoft and Netscape. From late 1995 to June 2000, when the court issued its final judgment, Microsoft's Web browser (IE) went from being the choice of less than 10 percent of Web users to about 70 percent, while Netscape Navigator...

Many diverse industries are populated by businesses that operate two-sided platforms. These businesses serve distinct groups of customers who need each other in some way, and the core business of the two-sided platform is to provide a common (real or virtual) meeting place and to facilitate...

U.S. v. Microsoft and the related state suit filed in 1998 appear finally to have concluded. In a unanimous en banc decision issued in late June 2004, the D.C. Circuit Court of Appeals rejected challenges to the remedies approved by the District Court in November 2002. The wave of follow-on...

U.S. v. Microsoft and the related state suit filed in 1998 appear to have concluded. In a unanimous en banc decision issued in late June 2004, the D.C. Circuit Court of Appeals rejected challenges to the remedies specified in a settlement reached in late 2001 and approved by the District Court...

There appears to be universal agreement that antitrust policy should "protect competition, not competitors" and that consumer welfare is the fundamental standard for evaluating competitive effects. There is considerable debate, however, about how to implement those principles in practice when...

The U.S. Clean Air Act, passed in 1970 with strong bipartisan support, was the first environmental law to give the Federal government a serious regulatory role, established the architecture of the U.S. air pollution control system, and became a model for subsequent environmental laws in the...

Fifteen scholars on auctions and telecommunications regulation urge the FCC to cancel bids made in, or permit winning bidders to opt out of, the reauction of the NextWave licenses in Auction 35. For auctions to function efficiently, buyers and sellers must follow basic rules, including the rule...

The new economics of multi-sided platforms involves a number of concepts that are familiar to economists as well as some new ones. This glossary, which is drawn from our book Matchmakers: The New Economics of Multi-sided Platforms, is an attempt to put together the main concepts and to provide...