Capitalism is but a collection of communistic bodies working in harmony with each other.
Within each of these bodies is a microcosm of the communism that we are familiar with, masked behind a different set of terminology. The only reason why it works is that it makes a lot more people happy than large scale communism since people have the option of jumping from one communistic body to another until they find their niche, hopefully higher up. The revolutionary winds of change in communism is tantamount to the financially-mediated winds of change in capitalism. Good psychology applied to each of these bodies similarly predicts corruption resulting in the demarcation between rich and poor, the powerful and the powerless. It is competition that drives capitalistic societies onward and the same competition that divides the haves and have nots.