ARM has dominated the tablet and mobile market, mainly because of the software, not the hardware. Android running on ARM meant for a very inexpensive device. If windows follows the same model, it can provide a windows based tablet for ARM at the same price-point. Given that the software will create a link between x86 and ARM, Microsoft is basically using their ARM compatibility to pull people back to the x86 platform. Without pricing advantages, Android won't have much of a chance as a mobile operating system. If you gave me the choice between a full windows tablet and an Android tablet/smartphone at the exact same price, I'll obviously choose the device that runs windows. Consumers want one platform for every device they own. They Unless Google can release a desktop/laptop/server OS to challenge Windows, Microsoft is going to simply consume these other devices with Windows 8