Boeing aren't projecting any of this growth in Australia. It will all be Asia and just about everywhere else other than Australia. Australian training organisations don't tell you this.
As another poster mentioned, we will need less engineers as as it's cheaper to offshore due to our high wages and training costs.
Just to prove a general point.
320 rating in USA costs around 17k AUD.
In Europe 27k (no base training required). Australia is over 40k now. How can they justify that?