As to JWcook’s comment
“Hmm what happens to the Australian aircraft industry when it’s all over, you have been screwed over, you’re not getting the high value stuff that’s going to be in demand in 20 years, your industry was seduced by the thought of 3000+ jsfs and providing the plastic screw covers and warning stickers would earn more than writing source code or AESA dev.”
I certainly do not have the knowledge or the will to get into an internal Australian debate about what is or is not in the best interests for Australia but on the issue of international cooperation, with the US and with others I think I might have some insight.
The trend in both large military and civilian circles is to go international and in doing so to establish long term relationships for very good and practical reasons. When Boeing contracts with the Japanese or other international partners to build critical parts of the 787 it does not just make a design and put it out for bid. Its partners co-design the parts, they do their own R & D and develop their own manufacturing process that would be very costly to duplicate. Boeing co-designs and as the senior partner has the final responsibility for the product it produces and carries its name but its suppliers are far more than just contractors but are long term partners.
Could Boeing acquire all of the skills and manufacturing processes necessary to do it all by its self; money permitting? Yes it could for it has the resources. And if it was really necessary, like if one of its partners cannot live up to their commitments, it would have too, it's the senior partner. But then the costs would go up, the development time would get stretched and often the final product in the end is less capable.
Boeing will continue to work with the same partners in the future as long as they have first rate technology, are reliable, and are cost effective. Establishing good working partnerships is neither easy nor is it cheap as the difficulty with the 787 has shown. To get deselected as a favored critical supplier requires that you screw up in some way.
What goes for commercial projects goes even more for military ones. Military projects have fewer potential partners to begin with and establishing sufficient security and working arrangements are even harder. As long as there is not some unforeseen political development, the incentive to maintain them is even greater and they are not just one time wonders.