Facebook spent almost $17MM in lobbying efforts last year [1]. I wonder why governments doesn't exactly have an eagle eye on this...
The rank and file employees at Facebook have no say about this. Tim Bray leaving Amazon to no ill effect shows this.
We're talking about Facebook exploiting the human brain to increase time on the platform. The users have little to say about this, and as long as the users are there, advertisers have nothing to say to Facebook.
So that leaves Facebook answering to their own ethics. Yes. that's the problem.
0 - https://www.investopedia.com/articles/insights/082216/top-9-...
1 - https://www.opensecrets.org/federal-lobbying/clients/summary...