I've always found it interesting that part of the issue gets ignored. Those people who are running around online downloading and uploading? They're beating the copyright holders at their job. The primary purpose for existence of publishers for centuries was to master the problem of distribution. Now, any clever 12 year old can run circles around these huge organizations in their spare time for fun. It's like if tomorrow kids became able to slap together Lambourghinis in their backyard. Except if 90% of our economy was based on producing Lambourghinis. Because distribution was the problem that drove the global economy. It was the reason why factories won out over village craftsmen. It's the reason we live in cities. It's the reason we educate our kids the way we do, why we structure companies the way we do, etc. Solving the problem of distribution was basically what our economy existed for for a century. And now... it's literally child's play.
This is quite a bit larger than copyright, but obviously media is the first place where it became very obvious that distribution is no longer a worthwhile problem to solve as it has been commoditized by computers and the Internet.