[broscillator]

Huh? A demographic is a random cross-section of humanity. The only thing that matters is if the way you're determining the group yields more sales.

The final goal is obviously a sale, but the real commodity is attention.

I'm not saying "this is how it is", I'm saying "show my a reason why this is not the case now or where we're heading.

Like, if FB could do this, and it yielded more money for them, what would stop them? You sound very convinced, so I'd be glad if you can go into detail as to what that conviction is founded on. Have you worked on these algorithms?