I think I heard that the Carthaginians used to auction off political positions, and the proceeds were effectively the taxes which ran society. While on the surface it sounds like a ridiculous concept, maybe it'd be better if we just cut out all the middlemen. At least policy could be directly connected to the paymasters.
Whild I hate the idea of a zillionaire tax, and I largely think good allocators should allocate, I also recognize that simply pricing things and allowing them to be bought is unstable in many cases.
If you can use it to take over a country it must be stopped.