How about making them better so they can compete?
I recall a lecture by Stan Schatzel, going back a long ways now, where he observed that Australia had the people, the skills and the resources, to design and produce aircraft in the 30-seat size range. I suspect that things haven't changed all that significantly in the past 50-odd years.
There have been more than a few successful aircraft in the civil side of things, Victa, AirTruk, Gippy's several, and so on. Nomad started out as a military fill-in which was both useful and damaging. Dirty tricks often played out to defeat good intent. For instance, the Airtourer was very effectively muscled out of the game by the US manufacturers playing dirty tricks in the Australian market during the 60s/70s. No different to the sort of things we see in the airline game in recent years ...