Confinity created its PayPal product in 1999 and Musk's company got merged into Confinity in 2000 because Thiel said they were both working crazy long hours and it would be more beneficial for everyone to join forces into a monopoly instead of compete with one another. Then Musk got kicked out of the company because they didn't think he was doing a good job, and he was fortunate to benefit financially when they sold to eBay. So it's a pretty classic case of survivorship bias, and the fact that he invested into an already innovative electric car company does not mean his taskmaster leanings are assuredly the key to success. For every one of Musk's companies, there are countless others enjoying a healthy amount of profit without the excessive hours.