The point is that justice is blind, i.e., just. You can't have a law that says if your name is "bjourne" you get to do X, but if your name is "sensanaty" that is forbidden. So if the law privilege the oligarch living in your country over the foreign oligarch, justice is not blind, justice is jingoistic. That path leads to fascism. You might be fine with that because it doesn't affect you, for now, but sooner or later, unless stopped, the fascists will fuck you too.