I came across this article on the DRM in Vista. No much wonder it is late. First they had to build it, then they had to break it.
What this fails to understand is that the idea of a file, a computer, and a user are all metaphors.
All the information is binary, and in the same environment, it is like asking someone to lift themselves by the bootstraps. The notion of imposing the same metaphorical limits, like "this is a file of content, ", "this is an executable", is like asking matter to divide itself into fire and ice. it may suit your metaphor, but it does not correspond to reality.
Ultimately they are accessible and treatable, and any pretense to the contrary is for Wall Street.