Except, if we’re going to have a tax on assets, why not simply assess the asset-owner’s net worth (we’d have to do this anyway to determine the ‘2%’ figure you mentioned earlier, and then allow the asset owner to pay that assessment in any way they like? That is, you know, with money. If the owner of a used car lot has 100 cars with total average value of $5,000 each, why wouldn’t the government prefer that he hand over $10,000 cash rather than two cars? As you said, the government would probably have to sell those cars anyway, why not let a guy who’s an expert at selling cars–the used car salesman–do it for them?
And of course, there are plenty of assets that can’t be divided. If you own the Mona Lisa, you can’t cut it into 100 pieces and give the government 2 of those pieces. Instead we could use tokens to represent the value of the Mona Lisa, and you could give the government 2 of those tokens, and they could use those tokens to provide the essential services we demand.
Yes, it sometimes happens that the government does come into possession of assets, through seizures, forfietures, and emminent domain. But these fall into two cases. In the first case, they’d rather have the money, but since you don’t have the money, they’ll take your stuff instead, and then sell your stuff. Or it’s stuff you’re not supposed to have (like, you stole it, or it’s illegal to have, or whatever), and then they’ll either give it back to the person who really owns it, or they’ll destroy it. Or, they really really want one particular thing you own, no other thing in the world will do, so, with due process, they figure out the “fair market value” of the property, hand you a check, and the sheriff kicks you out.
Anyway, here in the US the only significant asset taxes are property taxes. And yes, people can be forced to sell their land if they’re unable to pay the taxes on it. But most other taxes are transaction taxes (income tax, sales tax, tarriffs) rather than asset taxes.