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Microsoft CEO Satya Nadella admits giving up on Windows Phone and mobile was a mistake
(www.theverge.com)
This is a most excellent place for technology news and articles.
They've tried to build their own platform multiple times (Tizen the latest one), but they're still always stuck using Android.
They make a ton of money with their phones and making hardware that goes into the other phones, but that's nothing compared to taking a 30% cut of every digital sale on mobile.