Today, in the USA, corporations are incredibly powerful, surveillance technology is growing faster than legal frameworks or consumers can keep up with, and there's little expectation of or coordinated resistance from uninformed, irrational, impotent consumers or effective regulation from our partisan and captive governmental agencies. That hasn't always been true - at other times, colonial governments, monarchies, feudal leaders, tribal leaders, or religious leaders have held power. It probably won't be true in perpetuity.

The trick is to make sure that we only open Pandora's Box of brain-computer interfaces (or better and also more frighteningly, full-brain upload and emulation) technology when society is ready...

Edit: I'm reminded of qntm's excellent short story "Lena" at https://qntm.org/mmacevedo - about "the earliest executable image of a human brain". I won't spoil it, other than to say that it's something of a horror story, depending on your worldview and the depth of your imagination.