I'd love to see your sources for your assertion that the NSW State Treasurer wants to finance additional Tesla Superchargers that are only compatible with Tesla's.
5 million people but 1059 EV passenger vehicles in NSW of which 618 are Tesla's.
Source:
Registration
Tesla is not perfect and I agree that they have struggled to communicate a consistent policy on Supercharger access but the bottom line is that they cannot pay for all the energy and remain viable long term, so if someone was to base a business on the assumption that Tesla would provide free Supercharging is a risk to that business.