Someone — Altman doesn’t remember whether it was Musk or his subordinate, Sam Teller, said it — told Altman that Musk had “long since decided” he would only work on companies that he controlled. “Mr. Musk felt very strongly that if we were going to form a for-profit he ended to have total control over it initially and this was because he only trusted himself to make non-obvious decisions that were going to turn out to be correct,” Altman says.