The past gives a lot of lessons, all negative ones. Power people are endlessly greedy for more power, there is no end in that spiral. All top folks are like that, if you look for the signs you can see it in their behaviors outside PR rooms. Sociopaths to the last one, all big names and then some more.

So, when in doubt, feel free to have good faith in these behemoths. I don't. Secret court orders for example can force any company into anything, and it can be pro bono for some gov contract later. Why would they disclose this, ever? We had Snowden and others.

Come on lets be realistic here, all that data is a wet dream and ultimate goal of any 3 letter agency all around the world.