orwell said:
Perhaps you'd be good enough to detail what "cheap" domestic codeshare partner AA allegedly has in mind for assuming F100 routes.
Well, how about what's already in place with codeshares.
I tried booking a flight DFW-YVR a month in advance. Cheapest non-stop on AA was over $1000 r-t (per AA.com). However according to Orbitz.com, I could book an Alaska Airlines flight DFW-YVR with a change of planes in SEA for $512 r-t. Interesting part was DFW-SEA going and SEA-DFW returning was codeshare on AA.
Oh, and I checked the loads on non-stop flights. All AA non-stops for specified dates were wide open.
So, as an academic exercise, on AA.com I tried booking a flight from DFW-SEA for specified dates. Cheapest fare "available" was almost twice what Alaska was going to charge to go all the way to YVR and on the same flights DFW-SEA and SEA-DFW.
If AA is going to gouge direct booking customers while giving away seats to codeshare partners, the LCCs don't have to worry about taking business away from AMR. Customers will leave of their own accord.