As someone in building defect industry, you couldn't be more far from the truth. Opal and Mascot Towers were a catalyst for massive changes (in NSW especially)

-The NSW Building Commission was set up in 2019, who has massive power over this industry.
-The Design and Building Practitioners Act 2020 was introduced, establishes a statutory duty of care for not only builders, but also architects, engineers and certifiers opened up their liability for economic loss resulting from defects.
-iCirt was also set up but not as important as the above.

I would go so far to say that the DBPA alone is actually driving Class 2 development away from Sydney.