I can understand the concern. I guess the danger is that whichever system you choose to use, if there isn't some degree of regulation, then it really.... No airline is going to offer the all-in-one price, because it makes their price look higher, so it's an economy....
To what degree does international competition play a role? One of the backgrounder pieces indicated it was the competition from fares from international carriers, carriers that wouldn't be bound by the same regulations.