I do not believe that global carriers with a business travel backbone will be permitted to fail. What arises may be far from what one sees now and it may be a bit harder for a carrier to justify lounges and Krug when part of the bill has been or is footed by taxpayers, but the fact is that commerce will demand it.
Leisure carriers and routes are a bit different because the government incentive is destination oriented. E.g. places where tourism generates a goodly part of the local economy will press their national governments to act.