Well, for one he was not born that rich. Basically, anyone has the same opportunity. Depends, whether you have the drive, balls and mainly brains. He's got it all.
The way you put it, makes his achievements even more remarkable. As you put it, nothing new ... yet nobody has taken the so-called low hanging fruit, already invented stuff, and done with it what he has.
Of course, the roadster ending up in the orbit, was a marketing stunt. What else could it be? Remember Tesla doesn't do advertising or commercials, but surely the genius knows how to make the world to talk about two of his companies at the same time. Also keep mentioning that he would be happy if the rocket left the pad and exploded later, without damaging the historically precious pad ... in today's negative world, I am sure millions tune in expecting to see a massive explosion, so they could tweet about how ****** job SpaceX has done.