Good grief, so many self-appointed experts (like Poppa Jo) making inaccurate/uninformed statements about matters they can have no accurate knowledge of such as load factors and revenue and presenting these as if they are facts from an aviation oracle.
Citing all the Tigers and Compasses etc is pointless. EVERY major airline in Australia other than Qantas has gone bust. Virgin, Ansett etc. Similarly the self appointed experts were adamant that Jetstar was a temporary gimmick. It’s all been here on PPRUNE over the years.
Suffice to say, anyone can make basic statements about economic viability but without an accurate understanding of revenues and expenses, you’re just another mouth.