Tied sales have a long history of scrutiny under the antitrust laws of the United States. The primary basis for the condemnation of this practice has been the court's belief in what has come to be known as the "leverage theory" of tying: that is, that tying provides a mechanism whereby a firm...

Antitrust laws play a prominent role in the business environment of many nations. Indeed, if one is a regular reader of the New York Times or Wall Street Journal, the chances are good of seeing in any given week at least one, and often several, articles devoted to some aspect of antitrust...