I'm not sure how you are figuring this. If the number of cases is kept low the chances of infection remain very low. It is quite likely that Australia's caseload will remain in a similar position for the foreseeable future.
We have hopefully got the caseload low enough that people can largely resume normal activities without the numbers exploding.
I don't really see any likelihood that current COVID-19 hotspots are going to become completely safe for the people living there or for other people to travel to.
So do we stick everyone in quarantine for two weeks before they can enjoy a visit or return?
How do we have touring rugby sides?
How do we have a tourist industry?
I just don't see us locking ourselves away from the world, it isn't viable or acceptable
But I do see it as a good motivator for those at risk to sort themselves out as much as they can and become less easy to kill.