Sarah Tavel, a partner at Benchmark, wrote the post AI startups: Sell work, not software. If a LLM can deliver a final work product, it is likely possible to get significantly better paid delivering the work rather than selling software. More operationally demanding most likely, but that is part of the trade-off.
It is not entirely dissimilar from how consumer technology startups power a service that deliver the product, rather than selling B2B to others.