The fact is the government is not going to allow “normal” outbound international travel until all Australians “stuck” overseas eventually get home.
Right now that’s a relative trickle, and without a change in policy, this will continue on at roughly the current rates.
Hopefully with inter-Europe and Europe-USA travel picking up, more and more aussies become jealous/envious and change their tune on the old “I’m good with keeping the borders closed”.
Ideally at some point freedom to travel in and out will be allowed, meaning anyone who wants to come home can - but as long as there is supervised quarantine required, this is a pipe dream in Australia