I constantly wonder how Australian airspace would have evolved without meddling do-gooders.
It would be even more restrictive and even further removed from the efficient airspace management that our peers in the US and Canada enjoy --- for no good reason than "this is the Australian way" --- closed minded, impervious to new ideas, with the smug certainty that what works so well on the other side of the Pacific "will not work in Australia" --- and, of course pedantic and inflexible in day to day operations.
What part of this system results in the high rate of "loss of separation" incident in Australia, compared to the FAA ATC system, on which the real ICAO SARPs are based.
As for the extent of military controlled airspace in Australia, it is simply ridiculous, quite unnecessary, and costs civil aviation very dearly.
Tootle pip!!