It does become complicated when the scarce inputs are things like highly specialized labor. Georgism wouldn't tax that monopoly, though our current systems (progressive income taxes) do. Many people would want a system which penalizes businesses for buying up e.g. all the veterinarians in a city and charging monopoly prices.
As powerful as taxes are to create change, you don't need to use them to solve every problem out there.
Taxing specialized labor goes against that spirit, because specialized labor can be created. And in fact taxing the labor would result in less of it being there, the exact opposite of the optimal result.
Do you have a source on this?
What's the definition of this term?
I think people get tripped up on this specifically because a growing demand for something with fixed/inelastic supply will naturally tend to cause that thing to become scarce given enough time, and it's that scarcity as applied to land that's making Georgism look more and more like a good idea.
What if they just moved? Or should we have US-style global taxes following them around even then?
Although, maintaining a monopoly by owning land becomes more difficult with a LVT. It theoretically becomes easier for a new vet to find a place and setup shop in the city, and then the Monopoly is busted.
If you buy company x, restructure the business, start turning a profit, then sell the company -> that income (capital gains under current system) is untaxed in Georgism
If you buy an empty lot, wait 10 years to sell it to someone at a higher price, then all that profit is taxed (before it is realized too).
What both have in common is that economists from all different schools of thought widely agree that they're the least distortionary taxes.
The bad news is now you have to assess the value of a lot more things in order to do this (the value of clean waterways in a certain state, the value of IP taken away from the common culture) that may not have a direct market value.
These things have different values to different people. While most everyone wants them in some form, there is a huge spectrum between “it won’t kill me this month” and “living in pristine Mt. Fuji”.
Should private companies be allowed to pollute sparse remote areas with no population?
Does it have a financial value if nobody goes there?
“Undesirable behavior” is overly broad to the point of being actively misleading, and gets you into sin taxes. smut or drugs are not the scarce resources anybody is talking about here.