Assuming billionaires were going to get a special tax, how would you actually determine how much to tax them? Sure some would be straightforward like Musk where it’s entirely derived from a few companies with known ownership stakes, but what about all the others?
We don’t even know the names of most of the billionaires. With all the games they can play to hide money, now made even easier thanks to the changes Trump made in his first few months, how would you even figure out who and what amount to tax? They don’t have a normal salary or easily documented income like everyone else.
I’d refine that slightly - tax loans on anything except those for a primary residence, and loans used to create businesses that employ less than 100 people, or any business in service of the loan recipient. I’m sure that could be refined quite a bit. The intent being that they can buy a primary residence like anyone else and not be taxed on it - restrictions would apply like they’d actually have to live there, not sell it for “x” years and not build another primary residence for “x” years or then be taxed on it. The businesses would have to be big enough to be useful, not a business of rich guy’s 2 buddies that would just use the “fake” business to throw venture capital back in the rich guy’s business, or the rich guy buy a yacht and the “business” be him paying his own crew through a shell company to drive him around in his own yacht.
The specifics are going to need refinement, yes. The broad principles should hold though. One tax that forces them to spend down accumulated wealth, one to punish trying to offshore profits to tax havens.