For one thing, lots of transgression were against people who didn’t “tell others” - that include be willful disclosure - but people who sent mail or made calls. Just because that didn’t happen within their house, it doesn’t make it less private.
Hey, I have a great idea: Why don’t we aim place high quality directional microphones at any house.
By the way it is supposed to be done: With investigation and wiretapping in specific cases.
