Feel free to correct me as I see other comments saying the same thing, but I don’t believe Google wants you to spend a lot of time reviewing a specific search result.
They don’t have refreshing display or video ads where time on site really makes a difference. They want you to click on a sponsored result, which is a paid action worth way more than a viewed impression.
All these garbage AI apps that make a video of you or celebrity hanging out with their younger self when people could just look in a mirror SMH