Because theoretical communism has no use for money, the notion of ownership of that factory also goes away. The theory (at least the way I understand it) is that in a communist utopia, the society is not constrained as much by consumption and therefore everyone has enough.<p>Ironically, we might be approaching that point from the basic needs level - food and shelter for everyone is not such an outlandish idea anymore. However, I do not believe that people will be magically able to distribute that shared wealth evenly, so the more dystopian future is more likely where for the majority of manufacturing-related needs, capital completely replaces rank and file labor.<p>Personally, I think the idea of basic income or some other redistribution of wealth that keeps the demand alive is a more reasonable solution to the shrinking labor pool, as the need for labor will not evaporate completely, but instead individuals will be displaced from the labor pool in ways that will prevent them from effectively competing again.