Quite often the clash of views happens about the "copyright", but obviously the debaters do not understand where it came from, how it was developed, and what would happen to it later.
This post does not claim to be exhaustive, and it aims simply to describe the basic system regularities.

We will not describe here the distant times of the 13th century and a history of the first rights in the republic of Venice. We begin with what are closer and clearer to us.
Sparks 16 january 2012, 15:21