Substitute develop with innovate and perhaps the thrust of my comment becomes more clear?
My reply still works when s/develop/innovate/. Companies were (and are) allowed to innovate in order to solve the blocking problems around supersonic flight. They just weren't allowed to ignore those blocking problems.
My reply still works when s/develop/innovate/. Companies were (and are) allowed to innovate in order to solve the blocking problems around supersonic flight. They just weren't allowed to ignore those blocking problems.