I agree that that's capitalism's strength. But is such a competitive society sustainable in the long run? Is there an "invisible hand" that deals with the downside of such individualism, without the need for government intervention or planning? It looks like the neoclassical presentation of capitalism is academic because in practice there are no free markets. Governments or plutocrats (central powers) intervene all the time to compensate for the antisocial effects of mass individualism, effects which game theory came to recognize.