Holy @dan, very extensive analysis.
The government, using the tools available to them from their own intelligence arms hurts general privacy of course. Corporations like Google know you better than you know yourself.
Someone would have to be ignorant to think Google, Facebook, et al, aren't giving/selling information to governments.
I really think privacy is a dead concept as soon as you do anything online. The Amish are probably OK. For the rest of us privacy is a buzzword useful only in illusory terms.
I guess giving up privacy is the cost for all these free/cheap technologies. Just like the whole "If you don't pay for a product, you are the product" quote.