Yep it would be nice to have that capabilty, but unless we can export I don't really think we have the economies of scale to back a lot up, I'm really surprise that cea tech are doing well.
If say Australia was to adopt say local production of NSM/JSM replacing the Harpoon. That could mean of the order of ~500 missiles if you look at surface launched (>150+), sub launched (>100), air launched(>200) and land based applications (>50). The NSM is waiting for its big non european customer and Australia might just be that. Its enough to have a production line, and for Australia we should be more self reliant and the NSM is the type of weapon we should be making, it fits so well with out forces and our needs.
We have an agreement with Japan to be able to supply munitions.It would certainly be something they are considering purchasing (ideal for the F-35). While historically Japan has locally manufactured locally, as part of a wider strategic objective, it may make sense to partner with Australia. Also Japan historically has locally made US weapons, the NSM being Norwegian could be problematic. Who else can also supply other partners in Asia, something that would still be problematic for Japan to supply arms directly herself.
Singapore, Malaysia, New Zealand would be other obvious interested parties. Possibly the UK, I don't think there would be any impossible barriers there. Recent events in the US would have other nations trying to diversify their munitions supply. Australia is a strong and stable regional power many countries may seek to strengthen ties with and counter balance other recent events. South Korea might also be interested.
Australia and Norway could then jointly develop and evolve the missile and work to further integrate it on various platforms. (F-18/F-18SH for example which would open it up to every F-18 operator thinking about SH or F-35)
You start to hit a bit of critical mass. All very theoretical, but possible. There is certainly opportunity that trades on the strengths of Australia.