The better word is oligopoly (which is hard to argue that they're not). Just because there is no clear single winner doesn't mean that there isn't a problem. Th

The better word is oligopoly (which is hard to argue that they're not). Just because there is no clear single winner doesn't mean that there isn't a problem. The biggest problem of any -poly (duopoly, oligopoly, etc) is that they're almost guaranteed to lead to monopolistic behavior without government intervention usually in the form of regulation.