A lot of things are technologically feasible, and in many cases can't realistically be prevented ahead of time, yet are still considered socially unacceptable or even made illegal. Just because we can do something, that doesn't mean we should. This principle has never been more relevant than in the use of technology.
What's technologically feasible is irrelevant to our moral expectations. It's technologically feasible to brain you with a club and steal your stuff, and has been for millennia.
Preventing the misuse of Blunt Instrument Technologies™ is literally what laws are for. Surveillance is just a club we don't have laws about yet, but should.