Economist Robert Frank makes the argument that recent tax cuts that "benefit the rich" are actually hurting the overall well-being of the rich (along with the rest of us, of course). If the government doesn't have the resources to fund public health, road maintenance, and checking cargo containers for nuclear bombs, the results are going to impact even the well-off, and at some point these costs outweigh whatever benefit the priveleged classes get from having more disposable income.
He doesn't speculate as to why, then, the Bush administration and its backers insist on cutting taxes while debts are mounting. Is it possible they aren't even good at being selfish? I don't think it's any sort of actual anti-government ideology, or they'd be cutting spending as well as taxes. Stupidity then, or more specifically blind animal greed that can't even recognize its own self-interests.