If every digital copy is charged the same as the old physical ones, the economic benefit of the internet's innovation is effectively obliterated.
No way! There is still a huge benefit to the internet. There's no plastic to pollute the environment. You don't have to leave home to get the movie. You can stream it from netflix or watch it on Hulu.
Available on the internet, doesn't mean it should be available for free. There are still costs for bandwidth, servers, and all the middlemen who put the pieces together so you can access it that way.