Sorry for the late reply, I didn't see your post until earlier this week and I have been unavoidably delayed since then.
I'll answer your queries in order without quoting because…

Be interesting to see how that particular point plays out - my understanding was the builders could not demand the deposit until they obtain insurance: https://www.consumer.vic.gov.au/housing…

Business fail all the time. The govt rarely steps In unless it's an economically significant situation. You need to remember that builders were by proxy beneficiaries of handouts…

Hasn't been a single Gov hand out for any of these failed companies AFAIK.
Nsw said they'd considder one for metricon, but ultimately didn't. It's also doubtful they would have. It…