CTC may take the risk out, but it isn't altruism. It costs the airlines to "buy" cadets from CTC.
By selecting CTC grads, Easy et al are getting pilots who are bonded to them for seven years. Now that's a long time, and will hopefully take us out of the current employer shortage. I get the impression that, should the majors expand, there'll be the oft-mentioned "hoover effect", and quite a few of the LCO boys and girls will be off. Which means more recruiting. Tying people in will help insulate them from having a whole bunch of new (to the ailine) pilots who don't know the system, and allows the LCO to get their money's worth.
I'm not saying this is the major effect, but is gotta be at least a beneficial side-effect.
On the plus side, CTC won't supply all pilots. There will always be room for the self-improver, as ther will always be recruiters who were self-improvers.