What's wrong is there is only so much cake to go around, more for the baggage handlers means less for everyone else. The conditions of people more skilled, performing tasks with far higher responsibility, are reduced to pay inflated wages for unskilled manual labour.
Geoff Dixon is well paid because of the small base to choose from of people capable of running top companies. If he's worth what he's getting is well open to question.
If you ran Apple, how much would the man who invented the IPOD have been worth to you ?