[halfmatthalfcat]

Foundational at Paypal and OpenAI? I've heard different. Also leaving out Twitter which has at least halved (if not more) it's valuation. I would say he's batting less than .500, so while still good, not a sure thing in the slightest and the trajectory seems to be on the down.

[Jensson]

He was for OpenAI at least, he recruited key members and convinced them to go get big funding which they did seek from Microsoft instead of Elon himself. Likely OpenAI wouldn't have gotten anywhere without his involvement, they did break off from him since he wanted too much control not because he didn't help them.