Currently, you can live a communal lifestyle if you wish, even in this country. Nobody forces you to live a capitalist lifestyle, in fact, if anything some people are encouraged to live a more socialist lifestyle thru our wonderful 'social' programs such as welfare, housing assistance and foodstamps. Capitalists, on the other hand, are forced at gunpoint to turn over a large share of their wages in order to pay for the costs of these programs.
As Shin Tao said, the production of wealth is not controlled by gov't, nor by any small minority of the population. If it was, the fledgling Microsoft would have been gobbled up by IBM years ago; now Microsoft could practically purchase IBM with what they spend on snacks for the programmers.
Communism, socialism, all the various income redistribution schemes have been tried, and have failed, because humans aren't naturally communists. Human interaction is always based on the capitalist ideal: get more in trade than what you give. We've been this way since before we had money, it seems to me it's as natural as sleeping and eating. Even in rural Africa, a place as far from the traditional idea of capitalism as you can get, there is an ancient saying, "meat for meat".
If someone wants to live in a commune I'd be the first to defend that right, even to the extent that they not pay taxes as long as they don't ask for or receive gov't assistance. I would be tempted, however, to remind the communists of the fate of the original colonists in America who also tried the commune idea...