Sadly the way he goes about that is less than ideal. Tesla keep selling vapourware features and releasing things that are actively dangerous. Boring company was mostly a ploy to distract from high speed rail (which would reduce the need for cars). The Twitter takeover has been a debacle so far. SpaceX are about the only untainted venture here, and my understanding is they’re not run day to day by Musk, with staff spending inordinate amounts of effort to keep him happy and out of the way of the real work.