I don’t think that they have been trying to drive anyone into bankruptcy, they’re just focused on knocking Delta out of the number 1 slot. To do that they have been actively chasing every available dollar of revenue, which includes price sensitive basic economy customers while also improving the brand. The LCC’s are just caught in the crossfire. Don’t think for a second that the management of the big 4 would mourn the loss of a low cost competitor, but I don’t think that they are really in their sights either.