Ummm, a lot of people that are NOT rich, own stocks. Like nearly every 401k. If those stocks go up, then there is a tax, it’s called capital gains and goes up for higher income earners.
Also, where I live there is a tax paid on vacant rental property. It’s called property tax. I do not believe people, rich or poor, should be taxed on money they are NOT making. This would hurt owners with a legitimate reason to have a property vacant, like renovations, repairs, or a soft market. So in addition to rent loss the owner would have to pay taxes because the assumption is that the owner is enjoying it?
I don’t think there should be a wealth tax. I think the wealthy should just actually pay some taxes.