Either it's really valuable, and they can borrow money to pay taxes, or it's not and taxes are low. But people shouldn't be allowed to freeload on the work others do to make the property valuable.
Sometimes it works out and it's fine. It's not all the scam. But there are no scams out there that I would not have any confidence in working out. And as a government (which as a voter I'm part of), I certainly would refuse because there are too many ways that I can lose.