Why are they trying to censor the internet?

It seems to me that "they", is the powers to be. Major corps, government officials, and governments! It is of course for money and they do not want anyone else to make or better yet to cut into their future profits!!! If the mass's allow this censorship to continue soon the internet will change permanently and "Big Brother will be in every home & smart phone in the world" assuming that they are not already. Please help to keep sopa/pipa from becoming law and any similar action to change the internet.