I attended a talk given by Michael Hayden that touched on this concept a bit, with regards to the difference in RoE in "meatspace" vs cyberspace.

An example he gave was seeing a cop drive by your house. Ostensibly that'll put you at ease, the concept that a law enforcement agency is patrolling your neighborhood. Maybe the officer gives a wave, or even chats with you for a bit if you're out washing your car or mowing the lawn. You feel safe.

How would this possibly translate to "cyberspace"? What if the local PD did a regular port scan of your router, or attempted to crack wifis while on their patrol? We allow searches of our belongings when we get on planes, but when our packets go overseas, we very much dislike the idea that someone from the government might be taking a look.

The rules, he went on to say, are simply different, because expectations are different.