If you are a carrier vying for customers you have to offer choice. Jetblue chose to operate out of the NE and now complains about the cost has reduced choices. Touting a varied network yet limiting choice in travel has not served Jetblue well. Delta recognizes this and therefore leads the industry. United admitted its mistakes in leaving JFK and is trying to rectify that, providing choice. Jetblue wants to operate like a legacy in legacy strongholds without the choice. It just isn't working.
Neeleman mantra of “bringing humanity back to air travel” was solely focused on the average customer and Jetblue never intended to serve the first class customer. At play is a dichotomy between core and first with the mantra intended customer and the potentially revenue rich one.

Oil will begin to flow shortly. The assets the US has deployed to the region will ensure safe passage again. The US government is acutely aware of the potential issues of rising oil on a stable US economy and, selfishly, the presidents party and elections. This is a temporary increase. The issues with the jetblue model are not so temporary.