The rich know that the moochers and the parasites need to suffer for their (the rich) sins, and for punishment for failing to live pure enough lives to demonstrate that great leadership of their betters (the rich).
Policy preferences mostly aren't about narrow personal economic considerations, even for the rich. Most of them aren't lobbyists or even really businessmen. They're just rich assholes with a lot of time on their hands to practice the craft of being assholes.
