Thais “whole problem” is precisely what the existing system solves. I bid a future obligation to pay the tax only without the obligation to buy the land. At the end of the year, the county gets the whole tax payment from me.
It’s tempting to talk about “the whole problem” but if you don’t know how the system works it can be hard to see the forest for the trees.
Also I’ve never encountered a situation where the taxes past due exceeded the value of the land. The reason why is that long before this happens, someone already bought the tax debt, waited the statutory period, noticed the delinquent taxpayer, and filed for a quitclaim to transfer the land.
It’s tempting to talk about “the whole problem” but if you don’t know how the system works it can be hard to see the forest for the trees.