MS Strategy
My interpretation of their strategy is to make sure no one gets a better experience than a tablet user. If they don't get glass/aero because their hardware won't do it, no one shall have it. If "they" can't have their own images on their interface, then neither can the rest of us.
We buy high-end hardware to get a better result. More screen-estate, better colour re-production, finer resolution, ..... Now it seems the idea is to make sure we can't get a better result!