Sharing has been part humanity since the dawn of the human race. It is just easier to share things with more people now.
The question isn't "what's natural" or "what's easy." It's "what benefits the human condition?"
Do we want a culture where artists can make careers out of creating great art, or do we want a culture where there's no money in that so it doesn't get done by anyone except trust fund kids and people who are willing to take a vow of extreme poverty?
In most societies since the dawn of the human race, 99.9% have lived in hardscrabble poverty while <0.1% own virtually everything. Seems to me that the culture of "free" is -- a bit ironically -- taking us back there by destroying all revenue streams except those based on winner-take-all mass content aggregation. It might be the path of least resistance and it might be "natural," but it is not desirable.
Enforcing copyright pits the artist against their audience and limits the access of impoverished people to our cultural commons. Relying on copyright (ownership of information) to provide revenue steams tends to benefit that 0.1% (owners), not the 99.9%.
We are in the process creating new ways to reward artists for their work.
Non-attribution is an entirely different beast from piracy. Passing someone's work off as your own is despicable. Sharing someone's work, with their name attached, should be lauded.
Personally, how I want things to be is that authors freely release their content and still make a nice living. That's not necessarily natural and certainly not easy but you asked how I want things to be.
In any case, people who make money on the backs of other peoples' work explicitly against their will are still assholes.
The copyright holders did anything to limit access to copyrighted material, just to make it unnecessarily scarce. (Except in the cases where the copyright holder is the actual artist.)
One of Lessig's points is that piracy made Hollywood possible.
To me it's very similar to the war on drugs... Policy and business models need to change. There are always people resistant to change as they want to protect their revenue streams.
