I never understood Nine's logic. They have dedicated racistball shows (2 that I can think of) for a sport they don't have the rights to. Flick over to Seven, and they also have dedicated shows to that 'sport', but you won't see any NRL shows on that network.
There was once, of course. The Matty Johns Show, which, I believe rated well and was quite popular (even in non-League territories), but it was cut because their aussie rules equivalent (don't ask me what that was) was supposedly terrible (again, according to what I read and what people I know told me). Seven figured if their favourite sport's show was a failure, then they'd shut down BOTH programmes.
Now I could understand if Nine had the rights they can gave a couple of dedicated shows, but they don't.
All I can think is that they take League as 'settling for', but they're really wanting aussie rules all along. If they pander to them constantly, then maybe they'd be looked at more favourably when the next contracts are available.