I'm confident Google etc will be compelled (if they haven't already been) to share their dossiers with the US and allies so that there is a file on each individual's psychology, weaknesses, and a how-to manual for gaslighting that person with the goal to silence them or coerce them into acting a certain way.
And by then, the Stasi would look like cute amateurs in comparison.
Those raising these concerns have been dismissed as paranoid for decades, even post-Snowden. And yet, surprising no-one, here we are.