Pffff ... once you get to that level, you have a few 10’s of millions ratholed away somewhere just in case. The US could seize every KNOWN Cuban asset and he would still be worth at least 100 mil, I have no doubt.
Of course he does....but you know he ain’t gonna like it. By that time maybe the US dollar will be kaput. It will take a million to just buy a loaf of bread. Yet with his wealth surely has more than just the US dollar.