In privatisation parlance, sweating the asset is just that.
Australia lacks critical infrastructure, the sell off of airports made with no consideration of the future, only maximising the price (selling public assets to the public, what genius!)
YMML had the space and plan in place 30 years ago to build a third runway.
Much easier for the private owners to build carparks and shops for a quick return to their shareholders(often foreign), rather than a runway thereby serving the community...
From memory, it was Crikey that lamented the sector travel time by air YSSY-YMML in 1968 was 65 minutes, now it is 90(ish)