That's not necessary at all, and I think everybody knows it. The thing I think people often perceive as unfair is that there's a level of wealth beyond which you don't have to do anything at all, and you will continue to gain wealth - often at a rate that's much faster than people who do work very hard. I can see that feeling unfair. I tend to think in more pragmatic terms personally - I don't care too much if it's fair or unfair, I care more about whether it works (and on that, I'm undecided).