Australia is a high cost country - we enjoy a high standard of living, and higher wages naturally come along with that.
As mentioned by others, pre GFC, QF was expanding, making billion dollar profits, and wages weren't that much less compared to what they are now. So if QF were able to make bumper profits with basically the same cost structure -- staff wages aren't the problem..
Well said that man (or woman)!
My Joyce's efforts are almost as good as that bloke who went broke selling beer to us Aussies!