chapotraphouse

I'd prefer to force billionaires to do something else

You could force all billionaires

We really can't force them to do anything, is the problem, unless we have them at gunpoint (at which point we should just take all their stuff). The government works for them, not us.

If you can do that you have the leverage to establish a Dictatorship of the Proletariat and can instead tax them 100% of their lives.

Please see my comment about using NFTs in global stock exchanges :)