Honestly, I don't see that much different from a hollywood actress or NHL player being paid in millions. Which might be seen as a moral issue but a different one, of equal renumeration for work.

But it's important to point out that main source of income for B.G. (or any capitalist, for that matter) is not a reward for work, but rather reward from ownership of capital, which is essentially a share of economic decisions. It's pretty unclear to me why the society should reward ownership and not just work.