@DBActive
a wealth tax is impossible to enforce
Yeah, I'm curious to see what the proposal is - arguably there are some forms of wealth tax that exist, like I think I could make a plausible argument that the property tax on my house is a form of wealth tax, but of course property ownership is a matter of public record and not every other form of wealth is so handily tracked. And yeah, it also runs into issues where somebody's net worth is calculated on the expected future value of income streams available to them etc etc, it's a tricky problem but probably not unsolvable.
Even if they were enforceable, they are self limiting: if you tax wealth, you reduce it and soon wind up with no one to collect from.
This is true in some but not all cases. The tax rate would have to be somewhere above the rate of growth for the wealth in order for an individual to end up with less wealth than they started - remember that wealth compounds starting from your first dollar, while the wealth tax only starts counting the dollars after your first billion, so a tax of 2 percent on wealth over a billion would only reduce somebody to having less than a billion dollars if their fortune CONSISTENTLY grew by under two percent year over year.
If you set the tax at some significantly higher rate, like 25 percent, then yes: the tax would be self-limiting and you'd end up with a population of people with personal fortunes that hovers just below the cutoff of a billion dollars, occasionally popping above that line and getting trimmed down by tax. At that point, I suppose people would feel emboldened by success and move on to the next problem they want to solve.