> Vomit.
LOL. C'mon, Musk builds rockets, electric cars, robot trucks, and tunnel boring machines. How much more Tom Swift can one get? Ok, Ok, I admit he hasn't yet built a Jetmarine or an Atomic Earth Blaster.
> You surely know people smarter than him who didn't acquire the mass amounts of money
I've never met Musk, so cannot attest personally to his smarts. But I've met plenty of very smart people.
But smarts alone simply isn't good enough to do what Musk does. You'll also need:
1. excitement
2. interest
3. drive
4. willingness to try impossible things
5. perseverance in the face of enormous obstacles
6. a thick skin for being laughed at
7. a willingness to continue in spite of withering criticism and vomit