>Where are the main actors like Facebook, Google, Microsoft or Netflix?
I'd argue that the main actors (and others) have driven the web backwards, not forwards. They've done this by the push towards capturing consumers in a walled garden, the rejection of open standards, the embrace of DRM, the selling of user private data for profit, etc.
You listed companies I'd invite to sit on the board of some kind of User Tracking Foundation, but not anything to do with open web development.