A friend put it this way: "There have always been greedy people. Capitalism turns greed into an ethical imperative." Now it's the predominant ethical imperative -- old hats ("metanarratives" according to Lyotard) like God and country, even the Enlightenment, developed piecemeal over time as ways to stablize and perpetuate social structures, no longer work. As Marx says, "All that was solid melts into air." Of course, as noel pointed out, history has a tendency to emphasize the importance of these metanarratives to a monolithic "culture" without examining particular practices of beliefs -- perhaps there was widespread PTSD in an ancient form among Roman soldiers, plenty of cynical atheism, etc.
Fully agreed that the current situation demonstrates that capitalism is inherently unstable -- in fact, so much that I find the posts in which Gek flirts with the idea of "helping" capitalism on its way to destruction to be rather funny -- as if one more schizo I-banker would plunge the whole thing over the precipice. I'd rather have the smart people figuring out what to do next -- and maybe preventing further wholescale barbarism & insanity in the process. Maybe the creation of new metanarratives (not wholly convinced these are without merit or even possible to extract from humanity -- people tend to like stories), or some sort of Deleuzian rhizomatic/nonlinear way out -- or more specifically, way-into (know considerably less about this angle).