I’m always fascinated by the “Who’s going to pay?” logic. It assumes that there is some immutable rule of the universe that we all have to pay income tax, GST, fuel excise (plus GST) to the government, but then also pay for the “services” of government agencies.
The decision as to what is and is not funded 100% out of taxpayers’ funds is a political decision, not an immutable rule of the universe. The Airservices Act can be changed.
The cost of providing proper aviation infrastructure in Australia pales into insignificance when compared to the billions of taxpayer dollars wasted by government each year. As the water gets hotter and hotter, all us frogs need to keep that in mind.