This kind of policy needs to be discussed openly in a suitable forum, e.g. the IETF, not handed down to us by a single company who think they have a right to dictate how the Internet works - and have provably done a horrible job of it in the past (websocket over SPDY, anyone? Yeah, I'm not even sure which version combination of SPDY and websocket I'm talking about either - pick one of the hundred)
There are strong arguments for not enabling privacy by default - not least since it prevents any kind of decentralization or caching of content. At a time when OpenSSL just suffered one of its worst bugs in history, forcing small sites to assume the risk of running code like this, which they inevitably will get wrong, materially worsens security for all, it doesn't improve it.