Read my words carefully and pay close attention to "polarized political spectrum". Any group of people can successfully manage any long term projects so long as they are united in their goals. Democracy has nothing to do with it. But a democracy without much unity inevitably leads to bickering, which is the primary enemy of long-term projects.
Oh, by the way, wide body jets are created by private companies which happen to be in democratic countries. But the achievement of private companies shouldn't be attributed to democracy, should it? And NASA is probably one of a few areas that has bipartisan support, although not as strong as what it had in space race.