Sources: Microsoft, Reuters
quote: the scale and maturity of the iTunes store and it's customer base
quote: verybody and everything was disrupted by the iPhone
quote: Google/Android have made a valiant effort to keep up (sometimes pulling ahead in limited ways but generally lagging behind a bit)
quote: Google has almost completely failed to make a successful business of Android.
quote: In North America, iOS' share of mobile ad impressions grew a full 12.1 points between October and January, according to mobile advertiser InMobi. Traffic from iOS devices hit 35.3 percent in January, as compared to 32.7 percent for Android, and 11.6 percent for BlackBerry. Android in fact slipped 3.2 points between October and January, allowing iOS to seize leadership.