With a land tax many wouldn't get rich in the first place, let's address the root cause.
Would anyone else go for a deal like that?
The amount I will get in inheritance is more than the tax I will pay in my life.
I actually think the current US estate tax rules (minus the loopholes) are pretty reasonable. you get to pass on $10mm or so to your beneficiaries untaxed, but any wealth past that is subject to a steep tax. if you remove the basis step-up for assets and somehow prevent super-wealthy people from avoiding the tax altogether, I think it would be a pretty good system. enormous estates would decay quickly through the generations, but ordinary to upper-middle class folks could still leave their life's excess productivity to people they care about.
regarding the wealth tax in general, I see no reason to prefer it over a capital gains tax. if it's not possible to eliminate the loopholes that allow very rich people to avoid paying capital gains, I don't see why the same wouldn't be true for a wealth tax. with the possible exception of LVT, I would greatly prefer to see the existing tax structures get fixed than to add an entirely new tax into the mix.
(Edit: if we had a combination of capital gains + personal income tax that effectively achieved the same goal as a wealth tax, wouldn't that be basically a maximum wage? Seems even harder to sell. It seems to me the main difference would be that a capital gains tax still encourages holding on to assets and a wealth tax encourages spending.)
You'll have to walk through how exactly, otherwise this is just a hand-wavy and unfalsifiable assertion.
It's the same way Warren Buffett pays less taxes, percentage wise, than his secretary. When you've got millions to spend on lawyers and tactics amazing things are possible.
edit: Also trust funds and setting up a family corporation to manage assets.
It's circular and un-falsifiable.