I found this article quite interesting. It shows that, for whatever reason, adoption to the W8 platform/OS is slower than Vista.
http://www.computerworld.com/s/article/9237252/Windows_8_uptake_slows_for_third_straight_month
http://www.infoworld.com/d/microsoft-windows/windows-blue-confirms-desktops-days-are-numbered-215240By sticking to the program, Microsoft is following through on comments it's made previously, that it's in Windows 8 -- meaning the OS's assumption that touch is critical -- for the long haul, a line it's taken since the launch of Windows 8. The latest version of Windows has not sparked PC sales as some hoped, and, based on usage patterns, has had a slower uptake than the flop that was Windows Vista.
http://www.computerworld.com/s/article/9237252/Windows_8_uptake_slows_for_third_straight_month