The thing is that US is still the "trend setter" - if using iPhones is fashionable and using other phone is not and puts teenager out of the group then they'll

The thing is that US is still the "trend setter" - if using iPhones is fashionable and using other phone is not and puts teenager out of the group then they'll want it at all cost, not to mention young adults and Tinder related stuff some people mentioned in their comments where green bubble apparently means "worse, poor, sketchy". And as adults they will be submerged in ecosystem. If I were google this ~85% US ownership would make me incredibly, insanely scared about my phone related business. And not only phone related as device is gateway for everything. This is basically writing on the wall of what comes in not so distant future - it seems that Apple era is coming - which is sad for multiple reasons: their desire to totally control and lock down software AND hardware, their stance towards web browsers and API's: I'm expecting even more resistance when it comes to implementing browsers capabilities and even more eagerness for gimping existing ones or implementing something "apple way"