I love the idea.
A lot of users are just using Windows due to inertia. Pee in their face long enough and they'll finally bolt.
They’ll bolt to other OS that *GASP* Have updates that need to be installed too!
And this is from a person that had almost all of my half-dozen machines running Linux because I though I would have fewer things to have to deal with, only to find unlimited headaches to the point where every one of those same machines either run XP, Vista or 7.