Telstra was empowered and emboldened to sabotage because Labor was scared of taking it on. Because the union movement was sceptical of the outcome, and because the banking and finance sectors wanted to do it, which made Labor scared there was a hidden trap. De-mutualisation of electricity, telephony was hugely politicised.
As it was, telstra was paid $11b for the transfer of its pits and some customer access network exchange infrastructure to the NBN and had paused maintenance so much, significant amounts of asset had fallen into disrepair.
None of what you've stated changes the fact that the original plan for fibre-to-the-premises was derailed by the incoming coalition government under Abbott & Turnbull.
https://www.afr.com/companies/telecommunications/row-intensi...
According to this article, the LNP coalition were the cause of the subsequent abandonment of FTTP:
https://delimiter.com.au/2013/09/07/fttp-dream-coalition-vic...