Neuralink is not doing anything scientists hadn't already accomplished decades ago. It's not even necessary. There are people moving machiens with their mines without having to get their skull removed to stick an implant into their brains. And Elon is claiming he's going to make people walk again with zero evidence.
The Boring Company is already a failure. It did one project for Las Vegas, the fraudulent Vegas Loop, promising cars coming down in elevators and high speed pods going through hyperloops. What we got was a tunnel with no emergency exits and a bunch of Teslas driven by drivers moving people extra slow over a one mile loop, and it looks like people don't even USE it all that much! See here:
https://www.youtube.com/watch?v=LLzQgr2fUg0
Xai??? He's raised billions of dollars for it and has... zero revenue, zero product, just fuckin' Grok which is just waiting for a lawsuit due to violating copyright. Xai exists as just another company to suck up money from investors thinking Elon knows how to make AI when FSD still rams into parked ambulances.