Cashman
Hall of Fame
The issue is not the crowds - it is the players and support teams. Australia is leading the world in control of this disease - they have single digit daily case numbers and are starting to get back to normal life.AO doesn't need to be cancelled. Just play it the way USO was played. No crowds.
Holding the AO would involve letting in hundreds (if not thousands) of people from all over the world, many from places like the US and Europe that are riddled with disease.
Melbourne has already had an extremely damaging second wave, triggered by a quarantine breach. It caused the state of Victoria to be cut off from the rest of the country for months, cost them billions of dollars and hundreds of lives, and has left them lagging well behind the rest of Australia in terms of an economic recovery.
If ATP/WTA players and their support staff brought the disease into the country and Melbourne had a second quarantine breach, the domestic ramifications would be huge. It's entirely possible that the politicians will decide it's just better not to risk it.