> They can become even better, but even if they don't there are plenty of use cases for them.

If they don't become better we are left with a big but not huge change. Productivity gains of around 10 to 20 percent in most knowledge work. That's huge for sure but in my eyes the internet and pc revolution before that were more transformative than that. If LLMs become better, get so good they replace huge chunks of knowledge workers and then go out to the physical world then yeah ...that would be the fastest transformation of the economy in history imo.