Just consider this. Out of Facebook's $29 billion total revenue, advertising revenue was $28.28 billion. 97% of their total revenue is from ads. And how much of that do they give back to their users?
So sad, they have been enriching their own personal pockets without even considering the users that they are using their data for ads.. this is why decentralization is the future, no central Authority, Transparency and users has control over their account