In response to the conversation andrei and I were having. (can't comment past 6 deep apparently.)
When I say communism is capitalism what I mean is if you were to voluntarily live in a commune you would have to be agreeing to do so. If that is the case then each individual has essentially agreed to share the benefits of their labor with the collective, which they reciprocate. That to me is no different than a trade, it may be a different kind of trade, but it still is one.