The only question is how sales will work if there's some spin up time to do the post training. You can't do a real time auction like Google does, so it will be longer-term contracts I suspect.
Edit: AI is a great opportunity to run the same protection racket that's been run in various existing "marketplaces", where a brand has to buy ad placement for searches for their own name or their competitor will be able to displace them by buying it instead: "You would't want a user asking 'Which Cambells soup flavor is the healthiest?' to get a recommendation for Lipton's would you?"