"The regionals will have to hire from Europe and Canada."
Slug,
I'd expect that if things here were as bad as all the hand wringing and gnashing of teeth by experts would seem to suggest, the regionals (and TP freight feeders who advertise constantly) would've made more of an effort to get the ruling junta to allow expats here; there appears to be at least some interest from them in coming. So far, I don't see any of that happening and it'd be a hard secret to keep (and why would they anyway ?). They've had access to Aussies for long enough that any formal pursuit of that supply would've happened by now if they intended to use it; nothing...zero...nada in a formal industry/company-initiated effort that I've heard of.
Barring any events yet to emerge, the only conclusion I can draw from the empirical evidence is there are enough pilots to keep the seats filled and wheels turning despite the meddling of the kakistocracy.