I'd disagree. Copyright law has nothing to do with stealing or ownership, it has to do with claiming something as your own when it is not. Abolishing copyright law is a very good thing, as it enables people to use other work in new ways (for instance I could buy a song, mix it up, and resell it). I could not however, buy a song and then give it away for free, or at a lower price than the original owner. That would be a breach of ownership. Same thing with stealing, a breach of ownership.
The point being, in a copyleft society, a person could work hard and produce a song. Another person could buy that song, work equally as hard to remix it, and resell it. People who like the original will buy the original, people who like the remix better will buy the remix. This was the point Lawrence Lessig was making when Steven Colbert made alterations to his book. He asked "If you were to put that on eBay, how much do you reckon you would get for it?". Colbert replied "A lot!", and Lessig agreed "That's precisely the point!".
The point being, in a copyleft society, a person could work hard and produce a song. Another person could buy that song, work equally as hard to remix it, and resell it. People who like the original will buy the original, people who like the remix better will buy the remix. This was the point Lawrence Lessig was making when Steven Colbert made alterations to his book. He asked "If you were to put that on eBay, how much do you reckon you would get for it?". Colbert replied "A lot!", and Lessig agreed "That's precisely the point!".