The only way to organically grow communism is to establish an absurdly adverse environment that requires an extreme level of communal cooperation just to eke out a standard of basic survival, ergo our unfortunate ancestors, who spent millenia living hand to mouth. Ever since the advent of agriculture, communism became obsolete in the face of surplus food.
So can communism naturally occur, yes, but a natural tendancy, no. People trend towards security, which means possessing more than just the bare necessity against any misfortune that may temporarily derail their ability to earn or produce lunch. This is why post-modern communism has to be forcibly established and maintained, because it is a counter evolutionary ethic. It denies the possession of extra, ergo security, creating a needlessly fearful and paranoid society.
There's a simple evolutionary reason why communism is classless, stateless, and coinless. Our ancestors couldn't afford them. Their anarchy was a natural product of their lack of ability to yet wrangle anything more than basic subsistence out of their environment. It's not a condition to aspire to.
