Hence why everyone thinks supersonic passenger planes are a bad idea. Lots of profitable military supersonic planes, but every existing example of a civilian supersonic plane is only justified as a Cold War dick-measuring contest.
> And make every government purchase ever, successful?
yes. From the POV of the supplier, every gov't contract is going to be profitable.
That's why the military industrial complex is so big, and profitable. It's why some people go into politics to extend it. Esp. in america.
> How do you measure the profitability of military aircraft?
what you truly meant is how to do you measure the value obtained from a purchase of a military aircraft. And scholars have studied this for centuries and not arrived at a true answer.
