The tax the poster proposed was a de facto ban which was my point. But even then it wouldn’t work because some land is more desirable than others and by encumbering land ownership you encourage those that own the more desirable land to extract as much value as possible.

The thing we are dancing around in this thread is do landlords largely determine the housing prices. I think not. I think it’s supply constraints and government subsidized mortgages. These are largely issues driven by regular home owners not landlords.

How so? It's a fairly common model for each individual apartment to have their own owner, and a body corporate run by the owners manage common areas.