The thesis of a 1-person Unicorn has been going around since the emergence of LLMs and Agents. While I certainly see how an engineer can now do the work of 10, maybe 20 engineers, I'm still not able to see the path to a $1B company.
On Product Hunt, I can see many people launching their products using "vibe-coding tools" like @Lovable , @bolt.new , or@Replit
I reckon many people who created something with them are usually developers who didn't have enough time for building a side idea before, but with AI, they could make it happen.