It's not about music theft
We know that this will not really prevent copyright theft but the record industry is prepared to push for this because they can believe it will. It serves another purpose. It gets legally required government spyware onto your computer. It will be illegal to remove it and difficult to get online if the ISP requires it. Government plans require them to gain more control of the average person. People who resist this and don't believe the hype are in a minority and easily identified. We are all breaking the law somewhere along the line and can have pressure put on us due to this. It's not about music copyrigh, that's a pretext, it's about control of free speech and freedom by the government. The music industries fears are just being used to push some laws through.
The poster who quoted Train Spotting gets it. Think of the Matrix where Neo should keep his head down and be a good little office worker. If you have nothing to hide you have nothing to fear.