> Capitalism stops them. The state has expectations of everyone. They will have to deal with things from outside that will force them into some level of capitalistic thinking which will ultimately eat the project from within.
This is not a difference between capitalism and communism, and so not a valid complaint. You will pay taxes in a communist system. You will have to deal with all sorts of external influences in a communist system.
> The fact that the death of these experiments comes with a sale is illustrative of the point above
No it isn't. These were voluntary sales (especially since most were abandoned, not sold. There was no profit in leaving, except in some cases). It is illustrative of the simple fact that given the choice, all but a rare exception chooses against communism.
Or to put it another way: people REALLY don't want communism, and after trying it, that becomes worse. In many cases abandoning these communes required a large-ish group of people taking the decision together. In other words: they organized themselves to destroy their little patch of communism. Which illustrates the next point:
> > without constant terror, socialism cannot exist.
> Is that so? It sounds like red scare propaganda honestly, and I don't think you could reasonably make an argument for this without conceding that the same is true of capitalism.
You just made an argument in favor of this. Your argument is that people cannot be allowed to have access to the external world, or they will abandon communism. That must be prevented, in your argument.
HOW will you prevent it? State terror.
