All the safety vs commercial debates are taking place on other threads so I won't revisit the arguments here however I think most airlines blame the govt / authorities for the airspace closures dragging on for so long. Many question whether it should have been closed at all.
For these reasons (whether reasoanble or not) I am certain the airlines (maybe airports too?) will be going cap in hand to the government / taxpayer to cover the extraordinary losses.
Not saying its right - just how its shaping up.