QuoteTwenty percent of all users on Facebook will fall directly under Europe's new General Data Protection Regulation law (GDPR), which comes into effect in May of this year.
The fear, among a small number of Wall Street analysts, is that the tighter privacy controls that Facebook must obey in Europe will further reduce the level of engagement on the app. There is "complacency" around this threat, according to Deutsche Bank.
http://www.businessinsider.com/wall-street-worrying-about-effect-of-gdpr-on-facebook-2018-2
Content got paywalled and can't be bothered to work around it, but isn't Facebook is a better position with regards to GDPR than most publishers? They have a strong, direct relationship with their users, almost all of which are signed in. There is a perception of value so consent should be easy to obtain. They might have to change some practices around data collection on the open web (building profiles based on like button views etc), but that would seem to be more about restricting it to logged in users.
GDPR seemed to be squarely aimed at Google and Facebook, but these seem to be the companies in the best position to limit its impact.