Pretty much the same reason we don't build aeroplanes here any more....
Incompetence - either by Govt in the case of the Victa - (Gawd, he's goin' back a bit...)
or by some 'designers' in the case of the Gomad.....(?)
Then look at our last Navy helo 'project'...How many delivered??
For how much...??
When I was commiting aviation out of BK, we used to think it 'strange' that across the other side, was an aeroplane co. building 'tinnies', and somewhere else, a lawnmower co. building - yep you guessed it.
And nowhere near either, at Pennant Hills I think - was a co building a 'truck' with twin booms.
That seemed to work ok but didn't last either......(?)
Meanwhile.......