Suppose the user uses an LLM for topics a, b, and c quite often, and d, e and f less often. Suppose b, c, and f are topics that OpenAI could offer interruption ads (full screen, 30 seconds or longer commercials) and most users would sit through it and wait for the response.

All that is needed to do that is to analyze topics.

Now suppose that OpenAI can analyze 1000 chats and coding sessions and its algorithm determines that it can maximize revenue by leading the user to get a job at a specific company and then buy a car from another company. It could "accomplish" this via interruption ads or by modifying the quality or content of its responses to increase the chances of those outcomes happening.

While both of these are in some way plausible and dystopian, all it takes is DeepSeek running without ads and suddenly the bar for how good closed source LLMs have to be to get market share is astronomically higher.

In my view, LLMs will be like any good or service, users will pay for quality but differnet users will demand different levels of quality.

Advertising would seemingly undermine the credibility of the AI's answers, and so I think full screen interruption ads are the most likely outcome.