But that's the point. There aren't 1B Win8 users and there won't be for a very long time. With iPad you have to build in Apple's eco system but with Win8 you ha

But that's the point. There aren't 1B Win8 users and there won't be for a very long time. With iPad you have to build in Apple's eco system but with Win8 you have the option to build a standard Windows app. How many people are still running Win95 or XP? It will be a long time before Win8 reaches anywhere near 1B users.