Once you’ve made a certain amount of money in any field, you should be forced to retire and make room for somebody else. If you want to keep working, you could do so, but only for free. You could mentor someone else until they’ve made enough money, and then they could retire. This would be especially welcome in show business and politics.
Imagine how much more interesting the world would be if the same old clowns were routinely put out to pasture?