Comparisons of XBONE's DRM to Steam do not fucking hold up. The PC is a platform not tied to any one piece of hardware. Steam will fucking move to other machines. If Microsoft wanted to do this, they could have been doing it already but they're not.
I can't say the entire model is exactly like Steam, nobody can, because they haven't said anything concrete yet. Penny Arcade's article was well reasoned and level headed, which is something that's been notably absent on GAF since Tuesday with regard to Xbox One. People are going batshit insane on speculative information.