> These asset bubbles can only inflate because the owners make nearly as much money sitting on a vacant property as they make with tenants, so they borrow approximately All The Money to dump it into real estate.
The problem is, as long as the stonk based US pension system keeps flooding dozens of billions of dollars a month into the markets, there will always be enough money to flow into REITs and driving up prices, even for vacancies.
Now, introducing (or adequately hiking) property taxes has the problem it may cost the REITs a bit of their profits - but it will be a nasty issue for individual families and small shops, and the large stores will just pass on the cost to customers because even with that, they will still be cheaper than small stores.
Vacancy taxes sound good on paper, because they - if done well - only hit REITs that hope for value gains and other unproductive uses of rare real estate (like Chinese and Russians parking wealth in Western real estate so it can't be seized by the government). The issue with them is a second order effect. If made painful enough to be worth the effort and actually force landlords to either rent out if need be at a lower price or sell, again if need be at a lower price. That however immediately forces REITs to write off significant chunks of the asset value (if rented out) or, even worse, actually realize a loss on the books (if selling).
Unfortunately, the markets really, really do not like either of these two things happening, we've seen that during Covid and the hard pushback against remote working that followed.
I have said it before, and I will say it again: the US pension system being so laser focused on stock and asset markets is going to fry its host society alive, because what needs to be done for society to survive cannot be done because too much pensioner wealth would be wiped out.