There’s a high chance you will get stranded. Unless you pay for first or business on a carrier that isn’t about to pull out of Australia you’ll probably get stuck.
If you’re on Facebook, head to “Australian’s stuck around the world” to get a good idea about the current situation those poor bastards find themselves in. It’s an absolute disgrace that our own citizens are being left stranded to appease the hysterical bogan masses.
There’s no reason they can’t quarantine at home if vaccinated.