Now, in order to encourage people to work on original ideas, it was decided to give to authors a right to their own work, for a limited time.
This "right" is taken from the public domain (ie, the public). The justification is that by helping struggling authors, it lets them coming up with more original ideas, and therefore benefits the public.
The deal is this: the public gives a piece of their own property to authors, in exchange for more work from those same authors.
This system has grown out of proportion with its original intents. (The minute dead authors could earn anything from copyright, the system should have been considered broken).
So, although it's currently illegal, and I don't approve of "piracy", it's not illegitimate to consider that if someone says something, I have a right to know what they're saying (especially if that doesn't cost them anything to let me hear it).
You could really turn your proposition the other way around: if someone doesn't want non-paying readers to read what they write, then they should refrain from writing anything.