I was talking to a systems instructor at Republic and he said they need 20 to 30 per class... last class he taught 7 showed out of the 20 they expected... So I would say yes they do have a problem, even if ATP instructors are foolish enough to pay 60K to work there.
When you talk to a flight instructor they talk about which major they're gonna work for, you talk to a 6 regional FO and they talk about what they're gonna do after they quit flying.