I do block FB, Google and a bunch of others at the IP level. There are fallbacks, but I do end up leaking when they stand up new IP blocks, and the smaller surveillance shops are impossible to keep up with.
I also pee in their datasets sometimes, but that's a more experimental/entertainment activity. And I'm playing with some other ideas not ready for prime time.
> how can there be a balance of power between the individual and large organizations seeking to exploit everyone's data?
Regulation. That's what you do with antisocial behavior, negative externalities and worse. The transnational nature of the net adds complications and freeholds, but the big boys absolutely could be brought to heel, if people wanted to. Politically, the winds seem to be blowing in the other direction in the US, and the GDPR has been argued to death here.
But that's how the situation improves. (It will never be "fixed", absent an event that destroys the ability to run networks.)