Shoot, they have so much space. I think people forget how MASSIVE Australia is. I mean, it's roughly the same size as the continental United States, and sits ALL BY ITSELF out in the ocean.
We have jets, bombers, and missiles now... so not really a big deal, but what was England thinking by dumping their prisoners there and giving up that territory?!
If I was playing something like Civilization on the Earth map, that's the first place I'd go to start building my empire.
The only thing about Australia is... with the exception of the coasts, the entire interior except dead-smack in the center (Alice Springs?) is barren wasteland and / or totally deserted.
You can't find a territory more suitable for rocket launches.