So you’re not making it illegal to be a billionaire, you’re just taking it in the form of raising revenue for the government. Except government revenue serves

So you’re not making it illegal to be a billionaire, you’re just taking it in the form of raising revenue for the government. Except government revenue serves a purpose: paying for government services and salaries. What do you do with the surplus cash? What about when someone does not have a billion dollars in cash, but has billions in assets? Flesh this out for me please.