It's ultimately all about ads, though. Ads on the search page, ads in Android aps, ads on web pages, ads in or around YouTube videos, and several big data sets

It's ultimately all about ads, though. Ads on the search page, ads in Android aps, ads on web pages, ads in or around YouTube videos, and several big data sets that help them figure out which ads you are most likely to respond to. Although the Chrome team would prefer not to block ads, I'm pretty sure there's some pressure on them to reduce the number of users using ad blockers.