> Copyright creates enormous wealth. You can't have markets if you can't have transactions, and you can't have transactions in software if you don't have copyright protection. You're limited to this impoverished world where the software creator has to lock it behind a services API in order to monetize it. The world benefits enormously from just being able to sell software, movies, etc. as you would a physical product.
It's not a black or white thing, although I guess that's what supporters of endless copyright extensions would like to convince you to think. I concur with the conception of copyright which dictates that it should protect or make worthwhile the upfront risk and investment to produce something of value.
Would having a much more limited span or at least capped to the life-time of the creator versus 120 year copyright have prevented happy-birthday or mickey-mouse from being created? I think the answer is unequivocally no.
Neither is it true that you can't have transactions in software without copyright protection (Redhat, Mozilla is proof enough of this). Meanwhile larger companies with all the benefits of copy-right protection are making most of their money from Cloud Apps and Web services anyways (Facebook, Google) even Microsoft the traditional major player in the 'for-sale' software business is moving away from it towards cloud offerings.
> A world without copyright is not one in which studios still make the AAA movies people want and just distribute them into the public domain.
What is the term ( in length of years) across which Studios calculate the gross revenue vs. expenses from their production? I don't have a graph in front of me but surely they calculate that revenue must top expenses within the release year to justify expenses and it's a highly diminishing slope after that. Netflix is already effectively locked down (and clearly the future), - I don't see how copyright is preserving any kind of liberties here.