Worth it

Lol, if less complicated, that is, if there are no exceptions, then you need fewer agents

"Size of a city" should come with pretty hefty property tax I'd think. And billionaires love to be jetsetters so I image very few would want to stick to a single residence just to save on taxes.

I have thought about what I'm saying. The problem is you don't understand what I'm saying, but I did just kinda throw it out there with no explanation (because we're on lemmy.ml, I didn't think I needed to). I am referring to private property in the Marxian sense, where a distinction is made between private and personal property. All of the things you listed are personal property, not private property. In Marxian economics private property refers to the means of production privately owned and involved in an economic enterprise employing wage labor (i.e. factories, offices, farms) while personal property refers to consumer goods or goods produced by an individual (i.e. books, art, jewelry). What I was presenting as a solution is the abolishment of the former and not the latter, replacing private ownership instead with collective or public ownership (when workers share ownership of their tools and place of work - the means of production). This is the core idea of all anti-capitalist ideologies, though it was first articulated in this way by anarchists.

But it isn't true. It's working right now in Norway, off the top of my head.

But I'd imagine very wealthy people would be willing to spend a pretty penny to convince people like you and me that it doesn't work.