Are you are also cool with companies in the past hiring pinkertons to kill people also - because that's where your argument is leading.
Corporations take an interest in tracking people only to stratify them into groups suited to specific ad strategies. The worst their errors will do is pepper your browser and email with bad ads.
Not so with Palantir when their tracking data can misguide police departments, credit agencies, and even your employer into making your life a living hell. Surely any company with that much power must be held MUCH more accountable than they are now.
Facebook on the other hand is actively collecting the data. Without Facebook that database does not exist. In my mind that makes them far worse.