it doesn't take a rocket scientist to imagine how some of these AI Models could leverage a search index + something like wolfram alpha to generate a much more targeted and valuable search result.
Sure but the problem with the rocket scientists is they think about how good things can be, not how evil they can be. Sure, a chat bot could be made to give very valuable-to the end user results but as it will free like Google, results yielding-profits-to-company will be given, in the fashion you describe Google doing.