I like to think of it more broadly, and that we are currently in the era of the first automobile. [0]

LLMs are the internal combustion engine, and chatbot UIs are at the "horseless carriage" phase.

My personal theory is that even if models stopped making major advancements, we would find cheaper and more useful ways to use them. In the end, our current implementations will look like the automobile pictured below.

[0] https://group.mercedes-benz.com/company/tradition/company-hi...