Bucking Bar
I might, just might, have to disagree with you on ALPA and outsourcing. Prior to the advent of the RJ, outsourcing was a limited factor, mostly traditional turboprops with 30 or fewer seats flying to destinations the mainline wasn't flying to anyway. The RJ changed all that, quickly. Now, the mainlines had a way to replace whole fleets of fuel-inefficient, mainline-paid crewed DC-9s and 737s. That entirely changed the economics of short haul flying as never before. The ATR was a vanguard but the RJs since 2001 were the real outsourcing disaster.
In short, ALPA and APA could stand for tight scope when there were no alternatives to the DC-9-15, but between the economy and the comparison in costs, the RJ won.
That said, EA had Bar Harbor flying from BGR and PWM to LGA in ATR 42-seaters. The flying was replaced by DL flying B727s, later MD-88s.
GF