Jeff Bezos just jumped back into the CEO seat to launch Project Prometheus, a $6.2 billion AI startup aimed at revolutionizing manufacturing and space tech—not chatbots. Elon Musk responded with a petty “copycat” tweet, but while Musk wants to rewire your brain, Bezos is busy trying to build AI that moves actual atoms—and he’s already poached top talent from OpenAI and Meta to do it.