The amount of money one makes has zero to do with something almost all of us have in common...we all LOVE to get free stuff.
For whatever reason, ours has become a society that is absolutely OBSESSED with knowing what the other guy is making, and then complaining about it in some fashion.
My conclusion is that it's mostly jealousy, although this will, of course, be strongly denied by those doing the complaining. And for those folks, my question is, simply, what other reason do you have to even care enough to bring it up in the first place?
Personally, I only care about one person's salary. Mine. Whatever anyone else makes or gets as a perk because they're famous is of zero concern to me.