surely being taught the skills to get a job on the outside is one of them and lets face it being taught to fly is probably the most expensive there is
Which is why there is a return of service commitment - which used to be X years on award of wings, but may have changed. Very few get to leave before they have given Betty some use of the skills she's paid for, and the ones that do are the unfortunates who have been medically downgraded.
What do you suggest - keep them in harness until they drop or are so decrepit that even Ryanair won't hire them?