I can certainly see China using this precedent to sell SSNs to Pakistan now. From an Australian POV it makes little sense to me. Aus would denude the rest of its defence budget to buy a slack handful of SSN that would make little difference to the strategic balance in the IndoPac region, especially once the new halls at Bohai Shipyard have been running near capacity for a few years. I am not sure Aussie government has seriously calculated the long terms costs of buying, operating, crewing and disposing of SSNs (the last part is often overlooked).