Your music argument is plausible, but the journalism one doesn't hold water: if there were no copyright, it would only take one paywall subscriber to copy the contents to a paywall-free site (e.g. wsj.com -> freewsjarticles.com), and poof: journalists aren't making money anymore.
I used to work for an education-resources publisher that had a problem with lecturers photocopying their books. We created a portal with value-add features, and put the ordering-user ID on every page of every book. Photocopying all but disappeared once those measures were in place - people valued and used the bundled services. The institutions that were buying the books were slow to ship IT services. But we were fast. The lecturers started asking us for forums and work-submission and marking-workflow features to help them work with their students, and we did.
(The software lead had an idea that users should be able to just store and share stuff on the site. She moved to Canada during the project to join a new team, and did the same thing for the game they were running. They noticed that a lot of people were using the feature to share photos. So they focused on that, and that became Flickr.)
Newspapers are already well down the road towards this future - as part of subscription you get comments sections, and forums, and dating sites, and wine clubs. Still, I see significant unused potential. Each newspaper should view itself as some mix of bloomberg/twitter/linkedin, and encourage interaction between its members audience.
