Anecdata, but the rate at which I google something that I basically want to search on Wikipedia but then don't click through to Wikipedia has got to be about 50%. WP doesn't monetize their site, so maybe not the best example?

I guess this could also be indicative of how people use Google (the search engine proper) now. You need some sort of data(phone number, address, trivia fact), and Alphabet has already scraped the relevant site to pipe in that data.