When oligopoly firms collude, they usually do so to

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When oligopoly firms collude, their main purpose is usually to increase their profits. By working together to limit competition and control prices, they can ensure higher profits for each member of the oligopoly. While avoiding antitrust prohibitions may be a secondary motivation, it is not the primary reason for collusion among oligopoly firms. Increasing size or efficiency may also be goals of oligopolistic firms, but such goals do not necessarily require collusion. Increasing costs and raising barriers to entry would be counterproductive for oligopoly firms, as it would invite more competition and reduce their profits.

When Oligopoly Firms Collude, They Usually Do So to