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I understand that it's easiest to associate all those achievements with Musk, but he didn't do any of those things. He isn't a specialist in EVs (or even a founder of Tesla, he came in long after it started), he's not a rocketry expert, etc. He's just a business guy. There are plenty of business guys out there.

Or he saw some great business opportunities and did it to enrich himself?

I’d argue that no narcissists did all of those things. Elon doesn’t like patents and doesn’t share credit for IP he has no connection to other than ownership, so he didn’t do any of those things.