As long as there is enormous revenue from selling ads, Google and Facebook and others have to do stuff like this, or their sky-high valuations might come down.

As long as there is enormous revenue from selling ads, Google and Facebook and others have to do stuff like this, or their sky-high valuations might come down. So wether you take money from scummy fake rehab centers (and real ones who now have to play the game) or Russian election manipulators, its not likely to stop without costing a lot revenue. Looking the other way until you get called out is probably good business from their point of view.