I don't believe in single person companies at 1B valuation with the help of AI. AI empowers small teams, but AI also levels the playing field by evening out everyone's capabilities. For whatever is profitable, there will be a ton of copycats.
You are also implying that technical is easier than non-technical, which I don't think is true.
Previously the cliche has been that a technical person can learn the non-technical skills, but that vice versa is not so true.