Unfortunately, I think the route to more efficiency is funneling people to massive hub airports where widebody planes carry them on less frequent runs to other hubs— but that results in longer boarding times, less flexible schedules, and more stopovers, none of which the market wants.
So instead we have a bunch of smaller "commuter" jets making point-to-point trips, many of which are short enough that they really should be trains, not air travel. And that's a whole other issue. Sigh.
So instead we have a bunch of smaller "commuter" jets making point-to-point trips, many of which are short enough that they really should be trains, not air travel. And that's a whole other issue. Sigh.