No. Look, if OP wants to suggest a wealth tax, I think that's a concept that can usefully be debated. They're not without precedent; France has had one, off and

No. Look, if OP wants to suggest a wealth tax, I think that's a concept that can usefully be debated. They're not without precedent; France has had one, off and on, for many years, and sure, property taxes are closely equivalent. If OP wants to suggest a tax on (realised) income, then, well, we already have that. There's not a lot to debate here. If OP wants to suggest a tax on unrealised income, that's a pretty silly idea with enormous practical obstacles. Also, it is fundamentally not a wealth tax. It is different in every particular; one is a tax on a stock, and the other is a tax on a flow; they are charged at different times, on different things; if an asset declines in price, the wealth tax levy declines, whereas an unrealised gains tax would...what, have to issue tax credits to be carried forward? The whole thing is unworkable. (And even if it was workable, it would be in principle and in effect, vastly different than a wealth tax.)