[luhego]

Sure, you can go to SpaceX and Tesla and work on cool ideas and projects. The downside is that your pay is going to be lower and you will probably work more hours. You can go to a traditional FANG company and earn more money and you may work on cool/boring(depending on the team) ideas but you work life balance may be better. It's all about tradeoffs.

[ultrasounder]

You could extend Spacex/Tesla to any other "Billionaire" passion projects, where there is a strong drive to achieve key milestones while being nimble/frugal by working incredible hours for paltry pay. The bigger the bet, the longer the hours and meager the wages. Its kinda the name of the game.