@rbreich Income taxes are easier to collect and harder to avoid. They are withheld at the source if necessary. They could certainly be much higher for those with very high incomes.
We don't have wealth taxes because they are difficult to collect, with a few exceptions.
Real estate is relatively easy to tax because it can't move. Vehicles can be taxed because they have to be licensed to use the public roads. We tax those.
Other forms of wealth are more difficult.
How do you determine the value of a nest of offshore shell corporations?
A wealth tax is also problematical with very volatile assets. One could incur a ruinous tax liability due to a momentary spike in its price.
Of course, there would be capital flight to jurisdictions that do not impose such a tax.