I prefer to argue the same thing by saying that we recognize this is a rational expected behavior of any entity developed enough that it looks after itself.
Similarly to other lines of reasoning critizizing specifically facebook for "knowing they can be harmful but choosing to believe they can also be positive-good (useful)". This behavior is not exclusive to Facebook; all corporations are the same, and some have done humanity far worse, yet they're still around (why?). It's unreasonable to single-out facebook in this regard.
Neo-fascist autocracies here we go! (they're just cheaper)