What if we sold Australia to the highest bidder...
"When I was at uni in the 1970's the concern then was Americans buying up bits of Australia. A friend suggested that we just simplify the whole process: the Americans pay each and every Australian $1,000,000, and in return they can have the whole country, lock, stock and barrel. Would've cost the USA about $13,000,000,000. Bit more expensive than Alaska, but a bargain nevertheless."
Astoundingly, I remember raising the exact same proposal in the pub across the road from Victoria Barracks, Sydney, where I was posted at the time. The year would have been circa 1975/6.
Over several beers we arrived at the following conclusion:
Since every Australian citizen would have become an instant millionaire (a huge fortune in those days), the country would have ground to a halt and the economy would have done some very strange things.
Because your milkman, postman, soldier, sailor, shop assistant, mechanic, nurse, etc., would now be charging you a fortune for their services, or they'd be retired or on holidays, or more likely, seeing the impossibility of getting the other millionaire citizens to service them, they would have fled the country for more salubrious surroundings leaving this country Terra Nullius.