Reckon this is sure gonna be a hot topic!
First thing I noticed was:
But Australia has a small population of only 20 million people compared with 300 million in the United States.
Then:
Even today, Australia, an advanced, modern society, has less than 33 percent of the nation covered by low-level radar, only 26 control towers, and just 300 paved runways (compared with 5,174 in the United States).
Now let me see 300,000,000 divided by 5,174 = 1 airport per 57,982 citizens.
20,000,000 divided by 300 = 1 airport per 66,667 citizens.
Not that much different really!
What I would really like to see is figures relating to airport movements, aircraft ownership and usage...
And finally this one, which surely has been plagiarised from the annals of Pprune.
Australian GA pilots feel that they are the pariahs in a system that favors the airlines and the "big end of town."