I am not going to let anyone know the software that I have installed, nor will I trust or depend on a white list issued by a big private corporation with business interests.
I'm not saying I support it, but what I am saying is I would feel very uncomfortable knowing that my computer company would instantly inform the police if I downloaded "suspicious software" regardless of my purpose, but that's just a glimpse of where I see their next move being after the idiocy of ACTA and all the recent changes to privacy laws.
I imagine there's little likelihood that this capability could have impeded the Arab Spring since Microsoft wouldn't have cooperated, but it seems like this would create a vulnerability for Microsoft doing business in China. If China decided they wanted to more actively monitor software intended to bypass firewalls and circumvent censorship policies, I wonder how effectively could Microsoft could resist.
You should think of Tor as a tool for everyone, where we all cooperate to increase our privacy, and have anonymity when we need it.