Unfortunately you're not going to see any sort of legal redress against American oligarchs in any sort of American legal venue.

A country like France has shown that they're willing to take no an oligarch[0], and they have the nuclear means to protect themselves from American oligarchs leveraging the American military to punish France for doing so.

This kind of stuff will continue until a country like France forces a jet carrying someone like Musk, Altman, Thiel, or Zuckerberg to land so that they can be arrested, tried, convicted, and forced to spend a few years to decades in a drab little room.

[0] https://en.wikipedia.org/wiki/Arrest_and_indictment_of_Pavel...