When Google announces AI research it makes sense because self driving cars and trying to understand what a user means by typing stuff in a search box. But Facebook? They could create a million virtual DanBCs and then A/B test something against them, and then present me with the irresistible ad, perfectly pitched to draw me in?
And what makes you think Google can't or won't do the same? Their latest aggressive push of Google+ everywhere including the forced Youtube integration indicates that they have the capability or have been doing exactly what you suggest. Not to mention the huge amounts of data they collect through searches and Gmail that they already have been using to tailor ads to each visitor.
I see Google announcing AI research, and I think "self driving car" or "understanding search terms", but I have no doubt that it's also "serve better ads" or "slurp more data".
You're right, I should have put that in.