It's funny and sad that people judge an idea on the principle of "change this but leave everything else the same" instead of seeing it as part of a broader policy change.
Well implementing a tax which enables people or corporations to compulsorily purchase your home is quite the glitch.
Yes, implementing a COST scheme in the current system would be devastating, because taxation isn't the core problem when it comes to real estate development in the US.
Japan has figured it out, with rents in Tokyo being more affordable than in most big US cities.
What measures do you propose to mitigate the devastating effects of the tax you're suggesting ?
The fact that it would allow someone (or some corporation) to simply purchase my house without my consent is, IMO, an unacceptable "bug".
But in order to get taxation from real estate, when need a system that can't easily be manipulated.
We have a system of property taxes which isn't easy to manipulate. Properties are placed in tax bands based on their values. If you think your property is in the wrong band you can appeal it. We did so successfully on our flat in Bristol, we were unsuccessful in Don Towers.
If you are worried about low income renters getting evicted, just have the State own those properties, as is usual in many, many places: Singapore, for example, or the city of Vienna.
In many big cities the biggest constraining factor is the size of housing stock. even if every house and flat in London was publicly owned and rented out cheaply, there's still be a significant shortfall leading to homelessness.
In short: don't be so quick to shoot the Messenger for problems that have nothing to do with the message.
The problem is that the side effects of the tax you're proposing are worse than the problem you're trying to solve. The upward pressure on property value assessments as people try to avoid having their houses bought out from under them will make housing less, rather than more, affordable.
And if I get it wrong, my penalty is paying moving fees then going thru the cost of financing another house or renting at whatever overinflated prices this system creates... again