Tell that to the former Soviet SOCIALIST Republic. The standard of mediocrity created by those socialist policies you advocate destroyed that operation. Socialism=Zero incentive to perform past a basic subsistence level. Those humans and their nature will screw it up every time.
It's kind of a cop out to just say, aw we'll screw it up. Human "nature" does not have to be human history, and while you may think we'll steal, kill, whatever, I'm fairly certain you and I would be amazed at what distributed resources might accomplish. And there's not zero incentive at all. The USSR still pioneered many sciences. You think people only do good out of greed? Of course you do, that's the capitalist motto. There can still be fame, fortune, RESPECT, admiration, all the things that motivate human beings anywhere. There's no reason to think people just become any more automatons than the mass-consumers we are all here in America. Did you watch Honey-Boo boo today or go to Wal-Mart?
Could you provide us with a working example in the real world? Any countries, states or loosely aligned set of affiliates that utilize this model?
I can't think of any, not really certain if there are any. But I guess that's what they said before this country we all love. Non-hierarchical societies have existed on Earth before, in human history. Fairly recent history, and some even still exist.