Bulldog69. There are many good reasons why the RAAF run the VIP fleet with their own crews. The main one is for security reasons. Civilian crews would be union dominated which would be bloody lovely if there was a national emergency and they wanted danger money or some such nonsense.
The RAAF have done a good job of operating the VIP squadron for nigh on fifty years, despite earning probably 50% less than their airline pilot counterparts. And they don't go on strike!