Earlier quoted context omitted.
Huh? Why?
Because I make my money selling my labor and IP to my company (software engineer, it's in my contract.) If someone stole my IP from me or my company, it would be harder to pay the bills for either me, or my company.
The blunt fact of the matter is - A majority of the movies would gain more by giving it away to the public domain because most movies fail. Radio did not kill Art. Internet is the new radio.
The same is true even for software. 80% of business fail. It would not matter if they gave their code away. GPL based business have made billions, i'n not even talking about open source and have more users than some of the biggest "startups".
Among the minority that made it "big" copyright contributed maybe 5% to the success. IP allows big companies to bully creators, lie to consumers and bully independent companies that they perceive as threats.
In Music, Code, Science ... openness has lead to more innovation. Movies and Games present an interesting case. They have plenty of upfront costs. Games have already embraced some notions of the freemium mode. It would be really interesting if 100 million dollar movie is entirely funded by the people. There is nothing stopping that from happening. Copyright, Patents should last at-most 1 year.