(assuming that bayer and johnson and johnson may have given fbk or big G money for ads at some point, and perhaps companies that make plastic or pump poison into the ground and water to extract gas, other companies that use plastic, etc)
To think that these 'top companies" make it easier to use data to change an ad slightly so that it sways the opinion of open group of people one way and another group another - and get be put right in front of someone's eyes at the moment they are feeling down or researching something else -
This kind of propaganda power is indeed saying a lot about the improvement of the well educated and powerful humans of today.
As to the "great improvement" of humans today.. I'd say a majority are being influenced, and it's more often about extracting money from the majority than it is to personalize in a do-no-burn, let's-un-poison kind of way.
There has been some push back on occasion, (facebook wanting to withhold data against the NY AG looking for insurance fraudsters with pm data?) and in some cases the gov has backed off, a few times the courts made them back off some (the dreamhost site visitors data requests from sessions and co?) -
There are many more examples, however I agree with your comment and I think that in general most people are unaware of massive gov overreach with data requests at the moment, so most would say the data is not being grossly over used / abused by (the US) gov right now.
However that could change quickly, just as the cambridge analytica made people start to question some things with private companies use / abuse.