Virgin...You might examine landing charges. It cost almost 3 times as much to turn around a B747 in Sydney than in Singapore and twice as much as Hong Kong. Brisbane is not far behind! Ask how much Emirates and Etihad cost to land in their home port and the answer will be very low($0).
Not sure if you were intending to support my argument or provide evidence of the other additional extortionate costs that Australian carriers face as a result of the cost of doing business in Australia. But those costs reflect the other end of the spectrum to the Flat Screen TV crowd, that is the big end of town ensuring they get their bonuses. So it is pretty clear that Australian businesses in general operate in a high cost environment. That is no threat to those who's market is entirely domestic, but every Australian business that has an overseas competitor is doing it tough.