The threat to the freedom of the internet comes, he claims, from a combination of governments increasingly trying to control access and communication by their citizens, the entertainment industry’s attempts to crack down on piracy, and the rise of “restrictive” walled gardens such as Facebook and Apple, which tightly control what software can be released on their platforms.

via Web freedom faces greatest threat ever, warns Google’s Sergey Brin | Technology | The Guardian.

He said he was most concerned by the efforts of countries such as China, Saudi Arabia and Iran to censor and restrict use of the internet, but warned that the rise of Facebook and Apple, which have their own proprietary platforms and control access to their users, risked stifling innovation and balkanising the web.