now its 20-24% ... its all about the userbase.
Take 2.5 billion MAUs (FB, Insta, WA) and modell it via metcalfe and you get the "fair/intrinsic" value aka the network value(because there are language bariers you need a modified version of metcalfe)
implementation of Cryptocurrencys will make Facebook even bigger. It will grow. In Networks there is the tendency of clustering of information, there will never be a normal distribution or smth like this, it will always be fat tailed and facebook will stay in the tail. Its nothing compared to the volkswagen "scandal" and now they are back and get even bigger...all the FUD is bullshit an opportunity for rich people like buffet and co.
They WILL enter the biggest sector out there, which is the financial sector. Imagine they buy coinbase or any other exchange. No body knows but beeing pessimistic because of low revenues...please...