The guys working for them work damn hard and the people buying/using their services work damn hard. The people keeping all of them safe or looking after them when ill work damn hard . The teachers that taught the lot of them work damn hard.etc etc
Someone making half a million a year is surely getting a whole lot more out of the country and it's many resources than someone on the lower tax rate
Maybe they do, maybe they don't. There are no absolutes either way, but people do not work equally hard (or at all), that's just life.