In capitalism, there is no welfare system which secures an egalitarian social structure, thus capitalism directly or indirectly supports social hierarchy . When the economic differences in a society are so great as in the USA, people want to move upwards on the social ladder. This seems to create elitism, because it is when you belong to the elite that you can have privileges and material comfort. Elitism is one of the most subtle kinds of evil that exist, it means looking down on other people because of lack of money, social status or lack of education. Elitism is a key trait of racism, fascism and nationalism, and if I am right in claiming that capitalism reinforces elitism, this in itself gives reason to be skeptical to capitalism.
Egoism means being selfish on dispense of others.
Capitalist societies are based on free markets, and this freedom implies survival of the fittest. While I cannot back my claim up with any conclusive evidence, I do not think that capitalism itself reinforces truly altruist behaviour. In many cases we may be prosaic because it is for the benefits of ourselves in the long run. But authentic altruism may decrease when a society becomes hyper-capitalist. Every man must fight for himself and his life.