It will only be bailed out/nationalised by the government as an ultimate last resort to stop it going under. Thomas Cook, Monarch and Flybe have ready gone but I do think they would step in for BA.
Also don't bank on jobs etc. being saved if it was nationalised. It will be made profitable by any means possible and gradually returned to the private sector.
I'd argue the business is doing whatever it can to avoid being nationalised or to take government loans/bailouts at the moment. Not to say it won't happen, but they look keen to avoid it.