michaelleung: Then again Steam is sort of like this. Not saying it's good or bad, I'm just making a point.
Steam doesn't require you to log on to play: if you don't have an Internet connection and were logged in the last time you started Steam, then it will play in offline mode. I don't know how long it will let you play offline, but last time I was without an internet connection for a couple of weeks I was able to play my Steam games.
So while Steam is not as convenient as being DRM-free, it's much better than what these people are proposing. It's also worth noting that a number of games I own on Steam do appear to be DRM-free, since they'll happily run without Steam running.