I don't find this article any revelation. Mainline view ?
They have no problem with available applicants, although you'll notice the only Big 3 legacy CEO with no stated comment was Doug Parker. Delta and United have as usual taken the bull by the horns and shifted more 50-seat regional ops to mainline and (as usual) AA is still figuring out who they should follow.
Regional view ?
They are scrambling, watching CURRENT regional pilots shuffling around and very concerned. The comments by Empire and Cape Air execs are meaningless as neither of those carriers are domestic RJ operators for legacies. The fact is the ENTRY pool is virtually dry and it is THAT Envoy needs to make your sales pitch become a reality.
HIGHLY unlikely in my opinion and thus once that becomes obvious, another plan will surface and perhaps it's a plan they already have on the table ?
You make this article sound like these guys all have their ducks lined up and are in control and that is HARDLY the case. Envoy management is at the top of that list in my opinion. They're just plugging leaks in the dike as they appear and dancing as fast as they can to music with an continuously increasing tempo.