The closest example I've seen used before is the notion that you get to the shelves and go to grab a case of Coca-Cola, but as you reach to grab it a voice beam

The closest example I've seen used before is the notion that you get to the shelves and go to grab a case of Coca-Cola, but as you reach to grab it a voice beams at you from your side saying "Wouldn't you prefer <our brand> instead? Its $1 cheaper!" Now, which kind of works as an analog to these companies prioritizing their products on the search algorithm, but I don't really think applies to the practice of gathering such data.