That makes little sense. There's no vendor lock-in and SpaceX has no inherent advantage over its competitors, just a greater willingness to push ahead, try new things, and relentlessly streamline. The moment one of the incumbents decides to start imitating them, or some other billionaire with an interest in space (<cough>Bezos</cough>) starts their own version, they'll have competition again, if competition even went away in the first place.