Yes and no. While I'm not conversant on the route structure of ASA, I suspect a fair (just fair, not majority) of it is to smaller cities using 50-70 seat RJ's.
With oil prices the way they are, airlines are looking to reduce frequency or eliminate entirely to smaller cities. A significant amount of traffic from smaller cities has traditionally been sold at a loss anyway, and the revenue has been made up when they get to the hub.
That sort of thinking will probably go away if oil continues to rise. At some point, a city will either get one/two flights a day from a large jet, or just be cut out of the route structure entirely.
Remember, in the days of "regulation", there hundreds of small cities that never had air service. Now that gas is expensive, and will continue to go up over the long haul, airlines will probably shrink to service their core markets.
Who knows though? I hope it's just another cycle. You're right about Europe. Ryanair makes huge profits . . . . with a fleet of 737's though, not contracted lift feeding the hubs though.