Doesn't that rather make the assumption that we're all out there doing the job just for the love of it? I work because I need the money, and as we are forever being told that air traffic is now a commercial business like any other, I would like to think that specialist skills and work over and above the basics should be rewarded accordingly.
If I employ a plumber to fix my bolier I would expect him to charge me X, if I then ask him to sort my cistern out at the same time I would then expect to pay X + a lot! Is there a difference?