I think people will stop using AI if it has ads. People like LLMs because search engines return a bunch of Amazon affiliate link spam articles as the top hits under their own sponsored results which are also spam articles. Something that gives a straight answer is preferable even if it is often confidently wrong. If they put ads in the AI it removes basically the one thing it does better.

Ads have always been an important part of customers' information journeys.

Yeah; the fucking hazards obstructing the path to the destination.