But I rarely (never?) see any rhetoric in DNC politics about party members donating of their own free will to anything other than the Democratic party.
It's misleading to say that it would be a-ok to start a socialist society in a libertarian society. It (like many aspects of libertarian analysis, in my opinion) ignores the reality of a political situation like the one described.
More to the point, the notion that communes are a threat to libertarianism is flat out false. Libertarianism is about freedom to associate with and do business with people as you please. That includes pooling ones' interests in a commune.
What you cannot do under libertarianism is force someone to join, or prevent someone from leaving.
My point is that if these things are natural, it is likely that we'd reach a similar structure if we started from scratch.
I don't really think that the true premise of capitalism is going away until we reach a Star Trek post-scarcity level of wealth. I do think we can - and should - combat the ill-effects that come from the exercise of a capitalist system for billions of people.
I think we need to make it better, not a do over
That's because forcible communism's track record is simply horrific. You can create or join a commune as you please, I have no problem with that. But when you try to force people into one, or prevent them from leaving, a lot of people are going to fight you.
What do you think wealthy people do with their money?
> the only thing that makes sense
If you want to end human progress. Me, I'm excited about Musk's progress in space exploration, for one example.