Thank you for sharing this, it is truly amazing.
While I like Steam for the convenience and also appreciate their efforts in developing SteamOS I am concerned about the lock-in. Projects like this really help to own more of what you paid for again, luskaner is a hero for me.
I feel like it is important to point out that Steam does not require games to have any DRM. Not even Steam's DRM. It's entirely up to the game developer and/or publisher. Many games on Steam are already DRM-free where you can just back up the files and play without Steam.