Comment by Spare_account

There are a lot of walls to upgrade then, who should pay for that?

Standing in someone's garden, peering through their window is dealt with via legislation.

Since the invention of video recording devices, rather than having everyone upgrade their windows, legislation was reinterpreted and updated to govern the recording of people in private places vs public places.

It doesn't seem unreasonable for the same to be done to keep up with other forms of technology.