As was seen recently in Sri Lanka when the corrupt ex-president tried to run away by plane, you can't if the people hate you because the plane doesn't fly itsel

As was seen recently in Sri Lanka when the corrupt ex-president tried to run away by plane, you can't if the people hate you because the plane doesn't fly itself from nowhere - it needs mechanics, air traffic control, passport control, pilots, etc. He managed to escape with a military plane, but that's unlikely to be an option for your random rich person not ex-military chief. And Europe, especially France, has a rich history of getting rid of upper classes on occasion.