A free culture is not a culture without property; it is not a culture in which artists don't get paid.
As we've seen, our constitutional system requires limits on copyright as a way to assure that copyright holders do not too heavily influence the development and distribution of our culture.
Now that copyrights can be just about a century long, the inability to know what is protected and what is not protected becomes a huge and obvious burden on the creative process.
If the only way a library can offer an Internet exhibit about the New Deal is to hire a lawyer to clear the rights to every image and sound, then the copyright system is burdening creativity in a way that has never been seen before because there are no formalities.
So uncritically do we accept the idea of property in culture that we don't even question when the control of that property removes our ability, as a people, to develop our culture democratically.
The danger in media concentration comes not from the concentration, but instead from the feudalism that this concentration, tied to the change in copyright, produces.