Berners-Lee (you call him Berner-Lee at one point) appears to be accusing Facebook of giving your data added privacy (from the level of privacy you would have on a standard webpage that isn't within a social networking system). Given the incessant complaints about FB not catering to users' needs for privacy, that is somewhat ironic.
Social networking sites also offer a degree of protection from hacking and DDoS attacks, that bog-standard websites might not get.
They silo and re-use your data the way other sites do, but because they are social networking and not Amazon or Tesco, they have access to more of it.
Are cable companies censoring the internet, or are they just delivering data and streams using internet protocols, separate to your standard internet feed? Maybe we need two pipes, one fast and one slow, for the same reason we have motorways and ordinary roads.
There are more serious threats, most of which come from governments intent on watching everything, recording everything and censoring whatever they want, usually with less than surgical precision. This will reduce us to lowest-common denominator access based on what is acceptable to politicians, who 'block for votes', pandering to religious groups or tabloid scares. In the commercial arena, we have the threat of proprietary technology and the bizarre vagaries of Apple's chief inquisitor, Steve Jobs, banning at whim as the mood takes him.
Entropy will affect the net, increasingly, whatever we do. Expect a multinet future.
And discrimination is a given, globally. Many of us in the 'affluent west' can't afford a fast connection, whilst caps will block services for others. Privatised telecoms providers will only roll out the fastest tech in the most lucrative areas.
Wireless may not be able to handle high capacity feed for a good long while, for technological reasons, not ideological ones.
Phormware is a definite threat. We may have already lost the concept of an ISP as purely a data faucet, and that is a bad thing which we, and the ISPs themselves, may come to regret.
Technological development is most threatened by patents and patent trolls. It is becoming impossible to innovate at many levels, as everything you do has so many patents attached to every tiny feature.
The goal of the web isn't to serve humanity. It is a technology and has no goals, although those that use, develop and control it all have their own agendas. The goal of governments and corporates who directly and indirectly control the web is not to serve humanity. They intend to serve themselves and we have very little power to prevent that.
Do not expect the future to be bright. We may well look back on the early years of the web, for all the viruses and slow connection rates, as a golden age.