That might be true but this flight from ORD will cause a huge loss of feeder traffic for them.
AA has already lost all of it. That PHL flight was the go-to one for people in my part of the country. If anyone still really wants OneWorld flights, they have 1-stop options on BA from all around the country. Honestly, adding a UA flight from Chicago would have been nice, but I’m not sure it would have gotten them any more feeder business, as lots of people go through IAD, EWR and even backtrack a little to SFO, as it is.