This is incorrect. Majors still need feed to hubs, and even a 50 seat rj costs less to operate out of IPT, FLO, PGV, OAJ, and hundreds of other podunk airports, than an E175, or E190. Many small cities just cant fill up larger aircraft yet, but those passengers still pay big bucks to connect through the hubs. I agree that 50 seat fleets will be shrinking, and frequency will be reduced, as some routes get up-sized equipment, but there will still be a need for some 37-50 seat aircraft. This isn't solely because they may be low cost operations. It is because there is no scope to keep 37-50 seat aircraft at mainline.