On this topic, Google and Netflix will encrypt all their content this year and that will mean over 70% of web traffic volume will be encrypted.
Partly why the NSA is concerned. the other being device data encryption.
All they want is the master key.
You will start to see news stories positioned to get us to support a back door. It will be some pitiful victim of crime and if police could just break the encryption on the device, they could solve the crime. There will be an effort to re-position this from snooping to compassionate concern for Victims and protecting consumers in general.
So far, apple and google are holding firm.