Besides the privacy issue, there's the recommendation issue.
When I do an internet search for a product I know the engine I use will have a bias for a product. I compensate for this by scrolling down to see what other choices there are.
These internet helpers are going to steer people to only designated sites limiting choice.
The choice will be made for you.
Replace the word “product” with “candidate” and that is what drives ALL of this.
When I search for a specific business by its exact name, I get four or five other suggestions for companies who sell the same product before I get the one I’m looking for. Infuriating.