Please explain to me how Google makes money by keeping them on their search site. Google's revenue comes from ads. Not from the few link ads on their search sit

Please explain to me how Google makes money by keeping them on their search site. Google's revenue comes from ads. Not from the few link ads on their search site but from ads on other people's websites. Google has a strong incentive to make people click on those news article links, because it's behind the link they are making money.