When documents were analog, they were protected by government laws against unreasonable search and seizure. When they live in the cloud... the ground is shifting.
Prior to email, our private correspondence was secured by a government institution called the postal service. Today, we trust AOL, Microsoft, Yahoo, Facebook, or Gmail with our private utterances.
I'm quite certain the Windows 8 team is preparing to market IE 10 - and by extension, Windows 8 - as the safe, privacy-enhancing choice, capitalizing on Google's many government woes and consumers' overall unease with the search giant's power.