That is clearly not true. See, for example: [Industry publication]
A clarification: I meant that if you would show a net loss if you summed the net income of each airline in the industry since inception.To be fair, while it definitely isn't clearly not true, my statement certainly is not clearly true... ;) Some non-industry pubs backing my not-clearly-true statement:
http://faculty.haas.berkeley.edu/borenste/download/AERPP11Ai...
http://www.investopedia.com/stock-analysis/031714/why-airlin...