Society
"Thucydides wrote years ago that hegemony kills itself. A power that has hegemony always becomes arrogant. Always becomes overweening. And always unites the rest of the world against it. A countervailing power always reacts. A hegemonous system is very self-destructive. It becomes defensive, arrogant, and a defender of yesterday. It destroys itself. Therefore no monopoly in history lives for very long"

Peter Drucker, Managing in the Next Society

Drucker was actually talking about the Microsoft antitrust trial here. But what else do you think this could apply to?