Comment: Re: I can't wait to see this battle (Score 1) 701
So, if Microsoft Office is using a different Windows API than is available to competitors (it is their own product!), that is ok?
Of course it's ok, in fact the same thing exists with Android and iOS, anybody can use them but just be aware they are subject to change and since the vendor is the one changing them they can use them knowing they won't break their own apps, the app store actively blocks distribution of apps that use private APIs for exactly that reason but cydia doesn't and I pretty sure Google Play doesn't. The only one that actually enforces restrictions on private APIs (albeit only through their own channel - which of course is the only official one) is Apple.