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The meaning of oligopoly, and why it occurs
Why oligopolists have an incentive to act in ways that reduce their combined profit, and why they can benefit from collusion
How our understanding of oligopoly can be enhanced by using game theory, especially the concept of the prisoners’ dilemma
How repeated interactions among oligopolists can help them achieve tacit collusion
How oligopoly works in practice, under the legal constraints of competition, or antitrust, policy
NESTLÉ, THE SWISS MULTI-
But on June 6, 2013 everything was certainly not sweet for Nestlé Canada. On that day criminal charges were laid against Nestlé Canada; Robert Leonidas, a former president of Nestlé Canada; Sandra Martinez, a former president of confectionery for Nestlé Canada; Mars Canada; ITWAL Limited (a national confectionary distributor); and David Glenn Stevens, president and chief executive officer of ITWAL. Those charged, along with Hershey Canada Inc., are alleged to have conspired, agreed, or arranged to set prices of chocolate products, behaviour called price-
What the companies were doing was illegal. To understand why it was illegal and why the companies were doing it anyway, we need to examine the issues posed by industries that are neither perfectly competitive nor purely monopolistic. In this chapter we focus on oligopoly, a type of market structure in which there are only a few producers. As we’ll see, oligopoly is a very important reality—
Although much that we’ve learned about both perfect competition and monopoly is relevant to oligopoly, oligopoly also raises some entirely new issues. Among other things, firms in an oligopoly are often tempted to engage in the kind of behaviour that got Nestlé and other Canadian chocolate producers and distributors into trouble with the law. Over the past few years, there have been numerous investigations and some convictions for price-
For example, in 2010, the European Union, which has laws similar to those in Canada, fined 11 airlines $1.11 billion (yes, that’s billion) for price-
We will begin by examining what oligopoly is and why it is so important. Then we’ll turn to the behaviour of oligopolistic industries. Finally, we’ll look at competition policy (also called antitrust policy), which is primarily concerned with trying to keep oligopolies “well behaved.”