I think a difference here is that a person who is discerning enough to use an LLM product to read more information on a given subject is probably going to be turned off by the horrible UX of ads. YouTube and Facebook and Google can be plastered with ads on every page because the lowest common denominator of user wants to use those products. One of ChatGPT's main draws was the clean no bullshit, Apple-like UI and I'm positive the only reason it doesn't have ads provided by Microsoft yet is that they know they'll lose users and mindshare the moment they do it.
“I think a difference here is that a person who is discerning enough to use an LLM product to read more information on a given subject is probably going to be turned off by the horrible UX of ads.”
Once one us ads others follow. Not up to the user.
The "discerning" will get primary information from sources they can evaluate the trustworthiness of, not settle for a tl;dr fed to them by a tech giant that scraped Reddit.
How in 2025 can someone believe that ad money is going to be left on the table past the honeymoon phase?