Price comparison sites used to be very popular. But product search is extremely hard to do well. Users want to compare products on their merits, not based on

Price comparison sites used to be very popular. But product search is extremely hard to do well. Users want to compare products on their merits, not based on how much the seller is bidding on PPC. And not just product features but also seller features: logistics, delivery, reliability, reviews etc. I think Amazon has largely stolen that crown from Google already. Even though their search isn't great either. Where Google seems to make money is the commercial search for products and services NOT sold on Amazon: SaaS, insurance, medical, legal etc. The fundamental problem is that the PPC model doesn't align incentives: the search engine doesn't optimise for relevancy but for revenue. We need a different model.