[0] https://kagi.com/search?q=What+companies+did+Elon+Musk+start...
If that's your definition then technically he's not a founder.
Criteria is founder/CEO - I was specific in order to avoid the bikeshedding about Musk. The only impressive company Musk has founded with any longevity is SpaceX, and while an amazing company, it cannot be put in the same tier as Facebook.
Not impressive... You have some pretty astronomical standards.
I do agree about Facebook and Facebook not being in the same tier. Space X was a far harder company to build.
2. The first Roadster was shipped (to Musk, funny enough), 8 months before Elon became CEO. Let's be reasonable - I don't know how you can apply the founder/ceo label to a guy who was not ceo when their first product had already shipped.
There are plenty of stories (especially pre-Zuckerberg), or people starting companies, then being replaced by the board by a "real CEO" once they raised real money. These people are not founder/ceos. Google has a near identical path to Tesla; after Google's first real venture round, they hired Eric Schmidt as CEO, but Eric Schmidt is not the "founder" of Google.
I understand Elon has tied his public image to being the "founder" of Tesla; to the point that there was a lawsuit involved. However let's talk in plain terms here, he is not a founder of Tesla in binary terms.
Again, if it makes you feel better - you can read through my comments and note that I have never said anything qualitative about Tesla. I've said nothing about their growth, market cap, or Elon sleeping on production floors. I've simply said Elon was not a founder at Tesla, and therefore is not the group of people I think of as exceptional founder/ceos.
If you really wanted to steelman your argument, you'd be using SpaceX, which he did start, and was involved with before Tesla.