BA, I think wherever SWA goes, they can figure out a way to make it work for a profit, plus think about all the SWA regulars who will only fly that airline. They are all over the country. Now think about how many of them would come to Denver. That is a huge market, not to mention the untapped SWA market that is hibernating here in Denver.
I think that if they started up an operation at COS, they could have a great mini-hub just like WestPac did before their fatal move to Denver.
Maybe if SWA started a mini-hub at COS, they could start up feeder service to DIA, to keep costs down. That way you could fly SWA with a quick connection at COS and fly to a few major cities with only one or two stops.
Bottom line is, they could make it work, they've done that everywhere else. The only reason they pull out is they are fed up with delays, i.e.:SFO.
I wouldn't want them to hurt F9 in any way either. I think there would be a to survive for each airline though. On that note, I would hope for an SWA hub at COS.
Ding! You are now free to keep supporting Frontier.