For years Quantas has been given a near monopoly on the Sydney to Los Angeles route. Singapore Airlines has been actively trying to fly this route for ten years to no avail. But in  an interesting twist, Air Canada has been authorized to start flying this route.

Air Canada has announced plans to launch a daily service on the route with its new fleet of long-range Boeing 777s.
“We believe it’s time to get in there and compete,” said the airline’s Australian general manager, Jeannie Foster. Air Canada said a recent open skies treaty signed between the US and Canada would allow it to fly the previously barred route.
The announcement comes two days after the federal Tourism Minister, Fran Bailey, met Air Canada officials and opened a Tourism Australia office in Toronto. via the Sydney Morning Herald.

The door is still open for the Singapore Airlines to get attain this route, but the odds are severely diminished.