I don't think it's wrong to see capitalism from the point of view located byond it. A necessary futurism, I say, without which "what is" becomes the limits of one's thought.
What's wrong is to _date_ the end of capitalism, because by doing so, one almost always dates oneself (and the tradition from which one draws one's theory). Even the word 'future' has come to sound so retro, after so many failed predictions, and we can't afford to diminish its significance further. The openness of the social resists large-scale predictions of most kinds, and any good scientist knows the difference between open and closed systems.
Also, never bet on one cause of a terminal crisis, be it oil or anything else. A crisis of capitalism that begins its end, if it comes, will be a multi-causal affair.
Yoshie