It is amusing to consider what would happen if Australia had significant traffic densities beyond the narrow core of the 'J curve' (which isn't that busy by world standards anyway).
It is so easy for government agencies to claim credit for safe outcomes when a credulous public doesn't call for or want evidence of a causal link between the agencies' activities and the safe outcomes. The warm inner glow from the belief that 'the government' is keeping everyone 'safe' is sufficient.
I'm genuinely surprised and happy if I get to see another aircraft within cooee during any flight. (I hasten to add that I don't fail to see other aircraft because I'm blind or only fly around in the back of nowhere).