Betting the farm on untried technology is extremely risky.
You mention that Intel has developed an x86 Android phone but you seem to ignore the simple fact that there are enough reviews or sales to even begin to assume it's a paradigm shift in the mobile world. Don't get me wrong, Android as a standalone OS seems to be very good, but it simply doesn't have the integration with Windows or OS X to make it a seamless supplemental device to either platform.
Ease of use is probably the primary goal for any developer right now simply because Apple, and now Amazon, have proven that no device can truly stand alone and be fully successful.
In fact, it appears that Android activations have begun falling off as both AT&T and Verizon in the US have reported iPhone sales 50% to 75% higher than all Android devices combined over the last quarter. What we are seeing is a hole opening up which may allow WinRT to become competitive and, if things go somewhat the way they have in the past, probably the dominant or second-place mobile OS behind iOS. Android, like all other versions of linux before it, will become a niche OS.
The thing is, putting a full version of Windows onto a mobile device is gross overkill while the RT version is far more likely to succeed--as long as it has the integration to WinDesktop to make data exchange totally seamless.
