Before OpenAI dropped ChatGPT, nobody knew chat would be such a hit. Several labs had versions of these things, Google engineers were getting finessed by a rudimentary model just like in the movie Ex Machina that came out 10 years prior which was satirizing Google
But I don't agree that they aren't product-ized. There are many applications doing calls to LLMs behind the scenes and are hits, leveraging structured data very heavily and not having conversations with users at all. I would say that there is a predictable scope creep from executives to surface a conversational aspect though. We need to bring representation to that so we can point to some other best practice to push back