There's two fronts worth noting: First, Android is huge, oscillating around 85% world wide market share [1]. In many parts of the world it's the only real opti

There's two fronts worth noting: First, Android is huge, oscillating around 85% world wide market share [1]. In many parts of the world it's the only real option for customers. You might use Facebook because your group chat is there. Many people use Android because 90% of their options are Android phones, regardless of brand, and they can't afford the ones that aren't. Secondly, what about the actual customers (advertisers)? Google has by far the lion's share in the online advertising market; they take more than twice of Facebook's revenues, and have ads all over the web in contrast to Facebook, which is mostly (only?) on Facebook applications. Google sounds far "stickier" than Facebook to them, and way more in a position of market control. [1]: https://www.statista.com/statistics/266136/global-market-share-held-by-smartphone-operating-systems/ https://www.statista.com/statistics/266136/global-market-sha... [2]: https://www.statista.com/chart/12179/google-and-facebook-share-of-ad-revenue/ https://www.statista.com/chart/12179/google-and-facebook-sha...