Like, who wants to use an AI that says things like, "... and that's why you should wear sunscreen outside. Speaking of skin protection, you should try Banana Boat's new Ultra 95 SPF sunscreen."
In any case, consumer chatbots isn't the only way to sell the tech. Lot's of commercial use too.
I don't see why ads couldn't be integrated with chatbots too for that matter. There's no point serving them outside of a context where the user appears to be interested in a product/service, and in that case there are various ways ads could be displayed/inserted.
Go to google -> Search "sunscreen" -> (Sponsored) Banana Boat new Ultra 95 SPF sunscreen
Oh wow! 95 SPF! Perfect
On the other hand, their history suggests most people would be fine with an AI which did this as long as it was accurate:
> ... and that's why you should wear sunscreen outside.
> Sponsored by: Banana Boat's new Ultra 95 SPF sunscreen…"