They are collection a ton of data. As time goes on, if a large portion of it is encrypted, then it may not be feasible to break it all, even with Moore's Law. T

They are collection a ton of data. As time goes on, if a large portion of it is encrypted, then it may not be feasible to break it all, even with Moore's Law. They may just have to be selective with it. You can imagine that even in if the US becomes a new-age Nazi Germany / Stalin's Russia, it may still be prohibitively expensive to go spelunking through years old communications looking for people with possible subversive thoughts. Edit: It would probably just be easier at that point to ban encryption going forward.