Grogmonster; they can and will build whatever they want.
I see you share the majority opinion that Defence doesn't really need the resources they have - presumably because training pilots for the defence of Australia is not as important as a private company making money. If I wanted to build a lemonade stand I wouldn't do it in your front yard and then insist you open the gate for each of my customers.
Wagners will make this project happen, and good on them - but they will leverage off your tax dollars through decreased Defence capability to make it work.