I won't mention any airline name, but I've heard it from many people and even a few people that are at this airline that is not named....
but this will never happen as another airline will come in and undercut what another airline is trying to do. The mainline squeezes too much and knows that it can find another airline to do it cheaper.
Case in point... a certain airline was on strike to improve wages and benefits when another airline's management went to the pilot group, and told them that if they were to take a cut and agree to the contract, they would be able to take some flying from the airline that was on strike... and guess what, they did. Like I said, not mentioning any names. Disclaimer... I wasn't at either airline at the time this happened and if it is more to the story, I don't know, but like I said, heard it from many sources, even those that work at both sources...