In a country where the wealthy grab off more and more of the money every year, being a servant to the super rich is probably a growth industry. I would think one would be better off as a servant to the traditionally wealthy (DuPonts, Rockefellers, Mellons, Kochs) than the nouveau riche like actors, ball players and rap stars.
Maybe the Duponts might not be such a good idea, you never know when John might be let out of hiding.