As I was saying (before I was so rudely interrupted by an "error" message):
" Just because you're paranoid doesn't mean they're not out to get you..."
I don't remember where that quote came from, but it stuck with me (element of truth, and all). I very much agree that corporations (and governments) cannot be counted on to "do the right thing", and be the sole monitors/ regulators of info access.
I think we all need to try to become aware where the pitfalls are. It may be a fine line between being aware and careful, and becoming suspicious and cynical, but we can't afford to be completely oblivious. The intrusions are insidious, as you mentioned.
I admit to, for example, having blithely installed ("harmless little") apps, barely glancing at the permissions...but if I stop and pay more attention, I find permissions to access phone calls suspicious for a photo editing app...
My problem is that I don't recognize the "red flags", so I may feel uneasy over something harmless, or completely miss something over intrusive and risky. So it all makes me vaguely anxious.
It's kinda like my (former) fear of snakes: once I learned to tell the venomous from the non venomous I am generally less fearful: now I know when to back away slowly...