Propping up failing businesses is a road to nowhere. Please look at the Australian car manufacturing industry and the outcome of hundreds of millions spent on them. VA losses are gigantic by any measure. They can not keep using a credit card to survive. Sooner or later you reach the limit and then in their case demand another card...
There will be another airline in Australia. Upgrade Alliances AOC and put some B737's on it and voila..[QF sells their bit in this case]