That's a completely fair position. I just wanted to drive home that a lot of ink has been spilled on this question and I probably couldn't do it justice in an exchange of notes.

Bob Murphy is one of my favorite thinkers. Here's a pretty short introduction that he wrote a while ago: https://mises.org/library/possibility-private-law

Btw, I hear you on the "Real _____ has never been tried." point. The distinction I would make is between "market" economies and "capitalist" societies. There are market economies (which I would identify by whether prices are dictated or emergent) where the state still ultimately claims ownership over everything, but decisions are generally made by private citizens, rather than a state planner. Capitalist vs socialist is about ownership, whereas market vs planned is about decision making.