So I feel I must have a say here since someone has tried to make me look bad about my comment on a different tread.
Personally I feel as I'm learning more about this industry that I have joined, that the RJs have really damaged the industry. Look at the days before the RJs, what were the regionals flying? Do you remember when a 727, DC9 or even 73 was consider small jet?
I think the price of oil going up may do some good to the industry, cutting back on small jets / more schedules. Consider this picture, imagine oil had remain cheap enough for the 50 seat rjs to be profitable. I could see a future where basically all domestic flying would be done by RJs with regional salaries and the majors probably focusing only on the heavy transcontinental.
Again this is all in my own opinion. I would love to see more flying going back to the majors with perhaps bigger equipment and less frequencies, with regionals focusing mostly on small feeder routes.
During my MBA I did a case study between Boeing and Airbus, and feel Boeing has it right with their idea of 200-300 passenger capacity planes as their solution to airport congestion.