Spines: the more money you have, the harder they are to afford.

I'm beginning to think there's a relation between the two. If you have morals you'd never be a billionaire, your conscience would hate your robber baron behavior too much. But there are probably unnoticed billionaires who are actually quite moral, e.g. Warren Buffett, that is a counterpoint to this idea. (This thought of mine is quite shallow/unresearched, so perhaps under this comment will soon be the reply of how Buffett is an asshole...)