yes there are depts but... this airline managed to reduce their costs significantly in a very short time while other flag carrier tankers are still in their process of reducing their overwhelming overhead costs of pension obligations etc.
Will people travel first or business in the future in order to cover these high costs that flag carriers have when flying from their overpriced major airports? I don`t think so. I think „after-covid-times“ is the times where this business model works better than ever. as business ppl. learn to to their stuff via skype and zoom more and more. But Norwegian customers are in majority millennials and tourists. They will come back quickly and want to fly these modern, fuel efficient planes for a good price!