In such a world, I’m assuming their listings would be near the top as lots of people click on Amazon’s and EBay’s organic results (due to the wide selection on their marketplaces and generally very competitive pricing and good delivery track record). What people click on seems a good proxy for a search engine of “what are people looking for? (also phrased as “what will bring people back to my search engine next time?”)
In terms of winning the SERP paid ad bid, I don’t care if the search engine shows me the ad that’s best for them, because that will still give the newer business the chance to win the bid. If they choose not to, well, in that case I don’t see their ad. If the search engine doesn’t have ads, then in all cases I don’t see their ad.
If they go completely insanely rogue (like showing me a paid mesothelioma ad regardless of my search term), they either lose my future search traffic (“foosearch never has what I’m looking for”) or they lose the advertiser (“mesothelioma ads convert well for us on barsearch but not on foosearch; I need to lower or pull my bids on foosearch”)
In terms of winning the SERP paid ad bid, I don’t care if the search engine shows me the ad that’s best for them, because that will still give the newer business the chance to win the bid. If they choose not to, well, in that case I don’t see their ad. If the search engine doesn’t have ads, then in all cases I don’t see their ad.
If they go completely insanely rogue (like showing me a paid mesothelioma ad regardless of my search term), they either lose my future search traffic (“foosearch never has what I’m looking for”) or they lose the advertiser (“mesothelioma ads convert well for us on barsearch but not on foosearch; I need to lower or pull my bids on foosearch”)