Americans are so enamored of equality that they would rather be equal in slavery than unequal in freedom.
Alexis de Tocqueville
Cartels eventually break down because they realize they can reap huge short term profits by under cutting their own members. It usually takes a while and some sort of outside competition, but it always happens. The only time it doesn't happen is with "natural" occurring monopolies. These can happen when there is only 1 source or 1 buyer for a product. Oil, right now, is not a natural monopoly.
Hayek - too liberal for republicans