Chinese Stealth Tech- many think China borrowed fighter technology. I also think it would be foolish not to use proven ideas. Plus if your designs can be taken the only main advantages are strategy and training. This where the majors have the edge.
As a fan I undertook the challenge to complete Star Wars portrait every week until The Force Awakens was released, a full year from the time of starting. That’s fifty-two characters, in no particular order, that kept me, and maybe a fellow.