Yup. Any LLM recommendation for a product or service should be viewed with suspicion (no different than web search results or asking a commission-based human their opinion). Sponsored placements. Affiliate links. Etc.
Or when asking an LLM for a comparison matrix or pros and cons between choices ... beware paid placements or sponsors. Bias could be a result of available training data (forgivable?) or due to paid prioritization (or de-prioritizing of competitors!)
Eager to see how that will work with existing laws. At least in a lot of countries in the EU, any advertisement has to be explicitly marked as such. Sponsored content, too. So the AI will have to highlight that.