But, yes, the worst pieces of the puzzle are busy destroying themselves as we speak, and better solutions are bound to spring up.
The reason why books are not yet as much subject to copying as music and movies is because they're still distributed in a format that makes it reasonably hard to copy them. It actually takes some effort.
As soon as books become available widely in electronic formats (not just the select few that you can get for your kindle today, Amazon claims to have 300,000 titles available but there are substantially more books than that) and without DRM the publishers will be right up there on the barricades.
I don't think there has ever been a technology as disruptive to established businesses in terms of jobs and dollars as the internet has been to the media corporations.
Some of the practices and licensing processes date back to before recorded music existed. Publishing, mechanical, and performance rights, as well as royalty organizations like ASCAP/BMI/etc., are all more than a little strange in a world with the Internet. And, I don't think I even need to explain why the major labels should go to hell.