Probably right there about Bain/VA spending a little bit of money submitting the the ACCC as it costs them almost nothing compared to handing over an entire market share to Qantas, and just more grist to the mill of getting the JAL/QF partnership nixed by the ACCC, which it did.
The remaining flyable A330 fleet and B777 fleet might be seen now as too small for economy of scale and seeing as they have let all their pilots go I think that with the rest of the world reopening they will have lost those crew for good to either QF/overseas carriers and other careers. Even if they got new leases tomorrow for A330s at zero cost with the aircraft all painted and configured and the leasing companies agreed to that haircut, they still have nowhere to use A330s at the moment anyway due to all state borders being shut, and no pilots, and no cabin crew so they would be in storage anyway. If international borders are re-opening in Dec/Jan (and that's a very big if) they have probably missed their window to rehire/retrain/familiarise and do maintenance on any A330s or B777s already. Imagine trying to recruit and retrain a pilot group when you can't even cross state borders in Australia yet? Not going to happen.