What lasting change has Musk effected? The potential is certainly there, but the average person's life isn't much different than it would be had Musk never existed.
Really, you don't see what is happening here?
Who else mounted a private space company able to dock with that of the global governmental effort that is the ISS?
But. They're not there yet. At the moment, they're currently providing a launch facility that is equivalent to services offered by a number of other vendors, albeit at a slightly lower (currently) price. And the service they're providing really does not directly impact on 99.9% of the lives going on around you.
Yes, their reusable launch system program is way ahead of anything else anyone is doing, but it's still experimental, and isn't yet providing benefits to even their direct customers, let alone anyone else.
Musk hasn't made lasting change yet with SpaceX. I really, really hope he does. Becoming a multiplanetry species would be the biggest thing for Humanity since, well, fire, standing upright, or speech, and Musk seems to be the person best placed to make that happen in the next 20-40-odd years.
But he's not done it yet.
http://www.spacex.com/news/2014/07/14/falcon-9-launches-orbc...
http://www.spacex.com/news/2014/08/06/spacex-launches-asiasa...
http://www.teslamotors.com/de_AT/blog/promise-electric-vehic...