Having private security at the lowest $ to guard quarantine is not a great idea, but that's what you get for lowest price tendering. Imagine the uproar if company XY got it at $Z million more per week as it actually was including proper PPE training and did some personality/psych screening. There be accusations of cronyism and a front page spread that Dan's third cousin's child's dog breeder was the GM.
However, the missus works at a major hospital and has been telling me for weeks that she is more worried about catching COVD from some of the other nurses than the patients (especially as many nurses work across multiple hospitals). They crowd in the tea room and behind the desk. She does her best to avoid them each shift.
And now we have an outbreak in a major hospital amongst nursing staff? I will bet that they didn't all get it from a patient.
The point of that is that even if they put nursing and healthcare staff on quarantine hotels staffing rosters, COVID might have got out anyway. Something other governments are starting to realise by calling and restricting the number of inbound OS pax.
This outbreak - although not great - is a sharp wakeup call to all if governments are trying to eliminate this virus from AU. Better now than in 3 months when everything is more relaxed and it would travel further and faster.