The biggest issue
With windows is that you have so little control over the product that you own. Those "live tiles" are resource HOGS. It slows down your computer and as far as what ever the windows browser is at the moment I can assure you it is the same. It takes over your computer and hogs resources. That's why you need so much memory, cpu etc to operate it. What a mess...who wants to deal with that if you don't HAVE to? I realize money is an issue in many cases in enterprise, but for end users...if you have a choice...nobody wants to deal with redmond.