A lot of dystopian scifi involves corporations; Robocop, Weyland-Yutani Corp from Aliens, etc. Google's got more power than substantial numbers of governments.
And yet Google can't come knock on your door and take you away. Calling it dystopian can only come from an incredibly sheltered individual who has never faced any real danger.
Plenty of dystopian fiction involves corporations legally not allowed to do something and still doing it, because they're functionally immune to consequences. There are also degrees of dystopian between "murder corp" and Mr. Rogers Neighborhood.
You might have an overly narrow definition of "dystopian".
It's not just the action; it's the ability to do it without significant consequences. I could sue you for slander if you called me a pedophile; my ability to do so (successfully) against Google is quite limited. Law enforcement is also likely to treat an accusation from Google differently than from some random person.
