Regarding Gulfstream, we saw how a similar thing played out with Bombardier and their C-Series. It had cost overruns and delays, but in the end resulted in a pr

Regarding Gulfstream, we saw how a similar thing played out with Bombardier and their C-Series. It had cost overruns and delays, but in the end resulted in a pretty good plane that would have been successful if not for US protectionism and Boeing being afraid of any competition. Instead Bombardier are ruined, had to do a fire sale, and Airbus got the C-Series programme for free.