Not from an airline perspective but rather from a commercial perspective when does all this stuff become unfair trade practice or restraint of trade ?
Any clown can sell seats for less than they're worth, but it damages the overall industry.
A dominant airline who uses other routes to support unsustainable fares to maintain a monopoly situation must surely be in breach of commerce laws preventing trade monopolies.
As a non Ozzie, why is the OZ Government looking the other way and why are there no complaints by other players in the industry ?