That's not the right question. The right question is, do we want to have airline companies running planes or not? And if "yes", is it an actual long-term profit

That's not the right question. The right question is, do we want to have airline companies running planes or not? And if "yes", is it an actual long-term profitable business, or is it "years of tiny profits followed by bankruptcy" a.k.a. something no sensible investor would invest in.