The big thing about SOPA is that it opens up the flood gates for mass copyright infringement, which would cripple the internet. On the surface it just seems like recording studios want to protect their property. However, due to the SOPA bill’s ambiguity it would allow any site to be shut down if it contains any user generated copyrighted material.
For example say you upload a video to YouTube and it contains the latest Justin Bieber song in it. Well according to the new bill that would be copyright infringement and allow all of YouTube to be shut down. I can’t imagine an internet without YouTube.
Check out the video below for a better explanation of the bill.