Capitalism is well suitable to people at their current level, which is about developing a strong ego with intelligence and clear boundaries. Communism was appropriate in the past, when people had weak notion of self, is not appropriate now, and will be appropriate in the future when people want to give more and take less. "I think my nature was always one that strove to yield itself to the great whole of which it was such a small part - and by yielding itself, to draw back into it the sustenance of life." - a pretty good allegory on the essense of communism done right.