It's a good reason to consider sortition, or a system that distributes power so that it's super diffuse.

An example would be abolition of SCOTUS: Instead we create a special court for each individual case, pulling nine judges at random from the Appeals districts. That way, no Supreme Court justice can be owned the way Thomas and Alito are -- or one can, but they're not likely to get on all the cases a billionaire deems important.