> Consumer don't buy black box devices because they trust the few big companies that manufacture the hardware and software: they buy them because there aren't any alternatives that provide the same level of convenience, and can solidly guarantee a due level of privacy as to what happens behind the screens.

They still consent to it, though. People do perceive it as acceptable, and use it to share their private information. If they don't want to use smartphones, they're free to move to another country.