Paypal was invented at Confinity which was part owned by Thiel and had nothing to do with Musk. Thiel bought Musk's x.com in a merger deal that also made Musk ceo of the new company for 6 months before he was fired for incompetence. Beyond the windows server transition he also insisted on rebranding paypal to x.com, the everything app. I don't know where he was mostly right at paypal?