Key quote (for me) from the interview: "A social network is disempowering because you put a lot of energy into it, all your personal data out there, and tell it who your friends are. You can only use that information inside the silo of that particular social network." source: https://www.technologyreview.com/s/604052/webs-inventor-tim-...
And yet he decided to be "pragmatic" on web DRM, instead of taking the same idealistic approach because it was the right thing to do.