BS. The regionals, manned largely by young, inexperienced pilots need guidance and a road-map from on high, as well as a defined path (by labor, not managers) to the bigs. National, and the major MECs, have no incentive to help with that, since they all benefit from the B scale.

Aggravated by the fact that the junior, inexperienced (and often apathetic time building) members typically get hijacked by corrupt old-boy MEC's with the best interests of the 20+ year crowd at heart.

Of course that can happen at the majors too, but it's less of an issue because none of them just fell off the turnip truck.