The posted link in Post #7, just confirms a lot of people's suspicions.
It was "Borghetti-Cushing's" decision to veto SIA from buying 50% of Ansett the first time around that began the end of Ansett.
The following article in post #8 I believe is where the 'unconfirmed' rumours whether Canberra and/or QF had involvement in lobbying the NZ government to not lift the foreign ownership cap in Air NZ to 49% came from.