This requires a revamping of property rights as popularly conceived across many countries (which is not a bad thing, just takes time). In general I can buy just

This requires a revamping of property rights as popularly conceived across many countries (which is not a bad thing, just takes time). In general I can buy just about anything you legally own without going through extra red tape. But now we'd need laws saying that even if I offer you $1M for a home you can only take $500k, because that's one of the reasons why you can be priced out of an area. We also can't allow cash transactions for many things because then we wouldn't know how much you paid. And we'd need to extend this beyond housing. Just because I'm willing to pay $12 for eggs doesn't mean you should be able to charge or receive that much as the supermarket. Perhaps when businesses raise prices they have to write an essay about the legitimate justifications for such increases.