Tiger Oz now looks dead. Which members of the public will still want to fly an airline branded as dangerous? You cant fix training and maintenance in a week. Maybe in 3-6 months. By which time the airline is dead.
The real questions are whether it will take Singapore down with it, and whether the Sing govt will launch an enquiry into Jetstar. I suspect Tiger Oz is ring-fenced, so Singapore will probably survive, but again which members of the Singaporean public will want to fly on an airline branded as dangerous? If Singaporeans stop flying the Sing operation the whole airline is doomed.
As for the Sing authorities, just like CASA, they have to operate within their own legal framework. Tiger and its shareholders will surely try to sue CASA if there is a legal case. I am sure CASA has its legal ducks in a row and is expecting this. If I were the Sing authorities I would conduct an urgent review into both airlines.
We'll see. People will probably lose their jobs, before getting them back at Jetstar. The public will be safer, but probably poorer as fares rise while competition declines. And the industry will be back to normal.