Cruise was a small startup that got at least basic self driving working before they sold to GM. IIRC it was <10 people when I rode in one of their converted Audis. Lots of startups are working on NLP. I wouldn't be so pessimistic.
Alright, there was a startup doing self driving trucks in YC this batch. It’s far from a solved problem, and scrappy teams can still make headway.
But anyway, the point is that there are a lot of new opportunities opening up because of that new enabling tech, and many of them are accessible to small companies.
Hard problems like self driving cars and natural language interfaces are way beyond the capabilities of a small startup.