Trade Associations: Why Not Cartels?

The relevance of special interests lobbying in modern democracies can hardly be questioned. But if large trade associations can overcome the free riding problem and form effective lobbies, why do they not also threaten market competition by forming equally effective cartels? We argue that the key to understanding the difference lies in supply elasticity. The group discipline, which works in the case of lobbying, can be effective in sustaining a cartel only if increasing output is sufficiently costly—otherwise the incentive to deviate is too great. The theory helps organizing a number of stylized facts within a common framework.