Arsey 8,
yes it ain't rocket science but your hypothesis is incorrect. I can assure you, the two drivers (eg. 737 & 320) salaries have very little effect on the per passenger fare...there are many other overheads more significant, the biggest being fuel of course.
Do yourself a favour - take a look at any aviation management journal.
Nonetheless, if there are enough willing participants then why would management pay more? Supply and demand!