Do we really have to litigate this? Have you been on the Internet at all in the last 2 decades? Do you seriously think that even if that kind of advertising vector isn't being paid for today, it won't be tomorrow?
It is almost childishly naive to assume that these companies that are bleeding billions will have the ethical fortitude to say 'no' to Chevy / Ford / Jeep / Whoever when they offer them a check to make sure Toyota and Honda are unceremoniously just de-prioritized as recommendations.
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Beyond that, the issue is still that you are not going to get complete market coverage. It's feasible that you might on certain smaller market segments (Cars, for example), but something with much more producers and products in the segment has no chance. You would be better off spending the time to understand the market, what differentiates the products in it, and how to think about the parameters involved - all things that are being just abstracted away by asking a Chatbot for a list of requirements.