Reality does not insist that Windows programs require root access. I have one piece of software that requires administrative privileges (Starry Night Enthusiast -- I've complained to them). Every one of the dozens of other software packages I have installed (Python, Office 2007, Perforce, Visual Studio, Family Tree Maker, Streets and Trips, Cam Studio, Fractal eXtreme, SyncToy, Total Annihilation, Xbox 360 SDK, Image Magick, WinDirStat, Airfoil, Garmin Training Center, etc.) works fine as restricted user.
The two PCs that my other family members use are both locked down -- they don't have the admin account passwords -- and they are totally fine.
Your complaint is outdated. And you haven't provided any examples of these many programs that (inappropriately) required administrative privileges. Put up (so we can evaluate the importance of these 'many' programs that require root) or shut up.