[encomiast]

I think it grossly mischaracterizes what copyright protects to describe is as "most of the knowledge, research and learning materials". Still I agree, that the extensions of copyright length and the behavior/incentives of publishers works against the original intent of copyright. Having said that, publishers only have control of copyright because authors give it to them. Copyright rests with the creator — the system where people are compelled to sign this over to publishers is a different (but of course related) problem. Scientists who are tired of the predatory behavior of publishers have other choices today. It's not clear what alternative you are proposing.