I posted an idea the other day. It's called Library License. It's a way to make works digitally available through libraries, after a specified amount of time has elapsed since publication date. It is a currently a sketch of an idea, to be evolved openly. It's more a movement, perhaps in the form of a "drag n drop" clause that content creators may add to their licensing agreements with publishers. The idea is explained in full over here:
This is new and not fully formed, so I've added a comment area to the bottom of the LL page where we can talk about things.