Anarchy > Capitalism. Anarchy means without hierarchy. It means no man belongs to any other, to any degree without consent. It also means you economically illiterate communists and socialists can all band together in shared misery... while us capitalists will associate and contract without whomever we choose as well.
But who will keep people from killing each other?
Some kind of basic order is necessary. The right to life has to be enforced by someone.