Although the US economy could very well go on enjoying its important comparative advantage of relative growth, even in a global contraction, it is in the US interest as well to lead a global management of oil. These new trends towards global interventionism are given political impetus by the apparently continual round of impassioned protests against the global capitalist system every time there is a major global financial meeting. The international representatives of capital realise that it lacks a certain credibility. It can be seen in retrospect as a temporary aberration relevant as a way of attacking the social wage in western capitalist countries. What is on the way in, will be increasing attempts to control the volatile global economic economy.
Capitalism prepares the ground for socialism.
But the qualitative shift in perspective may come through the global route first rather than within the borders of individual states.