You are correct - but communism on scale cannot be achieved without massive bureaucracy - ergo more and more centralized with each layer. (hence crony capitalism and oligarchy, with bigger government).
Theory and reality are different that's very true.
Capitalism is the closet thing to a 'natural system' than any other (minus the corruption through monopoly - caused by bureaucracy)
decentralization with free market capitalism and minimal government of any kind, is the best way forward, imo.