| | 'Atlas Shrugged' didn't happen
About a world where there is no copyright: we already been there: hundreds of years ago, in the decades before the existance of copyright, everyone could copy anything like they wanted.
This lead to one very simple solution: secrecy. Everyone tried to keep their special feats secret. Masters of a trade only shared their trade secrets with long year students, or on the deathbed. Some had been so afraid of theft of their intellectual property they only shared it to their family.
And a lot of knowledge has been taken to the grave.
I think this is why copyright did happen: so everyone could share knowledge.