Similarly, in Windows Store (of Windows 8 & 8.1 and Windows Phone 8 & 8.1), every browser is IE or IE-wrapped: so in Windows RT and Windows Phone environment (were only Windows Store apps are allowed), there is only one choice for browser, i.e. IE. Well, MS killed Windows RT and Windows Phone hasn't got that much of market share. Hopefully they will change these restrictions in Windows 10.