Two things come to mind with respect to Copyright Law: the Right to Freedom of Expression, (the Right to Association, and Movement, as well), and the notion that thoughts as Intellectual Property exists. Both, I assume, functioning in a harmony of social-exchange within a Free Market.
Beyond defending the value of the Property itself, the Property holder may also exploit the marketplace by capitalising from the value, (by providing a Good, or Service), to profit from the demand for it. However the idea of a point of sale is no longer a delineation that is clear. Reproduction of such Property (Intellectual Property) is now possible, and it is easy, readily available to anyone; here is the crux of the problem which needs to be resolved.
At present, the Law is based on enforcement, and that reproduction is strictly prohibited, without the specific consent of the Copyright holder. It is onerous in that ordinary citizens cannot enjoy "a thought" to its fullest extent, if by sharing they become accessories. For the Property Holder, author or not, it is a challenge that has with it a great expense, defending the Copyright as the rightful owner. The traffic (as in trafficking) has been the focus of their efforts, control of the Internet must certainly have with it many strong allures.
...controlling how "thinking" is acquired, certainly has a power, for some, worth corrupting. Any control over the free dissemination of information is anathema to the Universal Principals, as Human beings we seek to better.
