Thing is, right now hes just a businessman (alebit a visionary) who has a lot of ideas and is paying a lot of clever people to make things for him.
The guy will no doubt leave a legacy which is what he no doubt wants but right now he hasn't actually achieved much above what NASA and other have been doing for decades.
Its spectacular to watch, its pushing the boundaries of technology and sending a car into space is pretty fun... But before Musk started we launched the voyager probes, landed people on the moon, landed on an asteroid, landed on an awful lot of planets...
The sticking point for recognition will always be that he's the money, same as someone like Richard Branson rather than the science brains which is what most of the stations are named after.