I see where the original post is coming from though, with market cap down to 18M today it would be relatively easy to shutter it and immediately (and unexpectedly right before Thanksgiving and Christmas). However, the others are right that United is dumping tens of millions of dollars into this venture (at least 100M this year alone) and it may be better to let them deal with it than to try to take about 80 airplanes off their capacity.
Additionally, whoever does it is gunna have a bunch of bad PR and everyone will be pointing fingers. This could be a situation where the juice isn't worth the squeeze.