Moxie has also pointed out that the choice is not simply "Do I want to be surveilled by Google?" or "Do I want the telco to track my every move?". It's stuff like "Do I want to stop talking to all of my friends who use GMail?". Or "Do I want to not have a cellphone and prevent myself from participating in informal social event planning?".
You were perfectly clear. You've made it clear yourself that the opt-in fiction is just that, just as the difference between corporate and government surveillance, such as it is, does not rely on any opt-in mechanism or lack thereof.
Don't give us this crap that there is a difference between the two when your point is so self-defeating.
I guess one difference is that you are relying on the assumption that Google is a bad actor. Google's actions have not shown that, and the benefit of the doubt is an important ideal.
The difference is that Google, Facebook, et al are opt-in. The NSA offers you no such choice.