Win8 main problem is there's no killer must have app(s) that decimates similar apps on other platforms. The Metro Mail app is almost a complete failure, and the store is not user friendly for discovery of apps. If they can't get their first tier apps to show what Win8 Metro can do, then what hope do third party apps have?

And it seems like Win9 is still sticking with this failed UI paradigm: http://news.softpedia.com/news/Windows-9-Won-t-Bring-Back-th...