IMO, they should fire musk, slow down their blue-sky research projects, rip autopilot out of the cars, and just build "boring" luxury electric cars with huge profit margins and rake in cash.
I don't think they should fire him, but he should most definately do the un-american thing: work a sane amount of hours and go on vacation every now and then.
I feel him taking some time off and easing off would benefit everybody. He is known for his super focused and driven way of work, and as he himself said:
“If other people are putting in 40 hour workweeks and you’re putting in 100 hour workweeks, then even if you’re doing the same thing … you will achieve in four months what it takes them a year to achieve.”
But he is only human, not a robot (to the best of my knowledge), and sleeping under the desk in the factory overworked will stress out everybody and the people in their close environment no matter how logical-thinking person you are. Building your company in a constant fight-or-flight mode is a disaster in the making.
Balance is important. For the sake of sanity, health and actual productivity.
Although this is completely anecdotal, I had a similar "100 hour never stop working" approach with my initial start-up ventures (obviously not of the scale of Tesla or SpaceX) which ended up me destroying my personal relationships and I cannot say my productivity was off the roof.
Then I slowly transitioned into having a proper balanced day, with exercise, meditation and PROPER time off. Also having healthy work habits inspired a lot by Learning How to Learn (popular MOOC on coursera) and work by Cal Newport ( Deep Work ) with a sprinkle of org-mode here and there.
I have to say that first time in my life, I feel happy, fulfilled and proud of my "weekly output"