We all have a choice not to use them and I think this is the point he's missing (or the article is omitting). The opening paragraph should be "Inventor of the World Wide Web, Sir Tim Berners-Lee, has warned that the internet has become the "world's largest surveillance network for those that use Twitter, Facebook and Google".
I have had lengthy conversations with my family and friends about Facebook and Google and what they do with your information and the majority shrug and say either "I'm not bothered" or "They would get bored looking at my stuff". I don't bring it up with anyone anymore.
I feel that something monumentally bad will happen in the future related to the information these companies have amassed, something epically bad and the public will (perhaps) say "Enough is enough" but it will be too late... just my $0.02