Is the "one-person billion-dollar company" actually possible, or is it just a good sales pitch?

Sam Altman said it out loud: AI will enable one-person billion-dollar companies. Not someday. Soon. And I keep going back and forth on whether that's a genuine prediction or a very well-timed one to make when you're selling the infrastructure. Here's the tension I keep running into: we're watching Big Tech lay off tens of thousands of engineers, designers, and PMs right now. And the same CEOs making those cuts are telling us that one person, with the right stack of AI agents, can do what used to take an entire org. I've been CEO four times. I've lived in the ops weeds, vendor contracts, compliance issues, hiring mistakes, client escalations at 11pm, the whole thing. And honestly: even setting aside the billion-dollar bar, if one person could reliably handle the workload of a 20-person agency using agentic AI today, that would be a genuinely significant shift in how businesses operate. Not a small thing. So I'm curious where this community actually lands. Are you buying the one-person company idea? Have you seen it start to work in practice?