Litebulbs ... money goes on investment, expansion, increased security costs, wages, etc. And it's badly needed when you see the state of some of the airports, the London airports are a disgrace in particular.
No point having a fabulous salary and pension if it costs so much that the company can't keep investing to keep up in the market. It would eventually close with a loss of business and jobs. It simple market rules (as much as it hurts).
Of course, there are a lot fat cats making rediculous sums on the back of it all - that sticks in my throat.