Let's be clear here. It's *not* Facebooks data.
It's users data.
They sell it, keep all the money and b**ch that some of their users don't want to play that game.
This might come as a bit of a shock but Bill Gates predicted this decades ago.
He thought people would give up some privacy for some cash, because that's capitalism. You sell something for something in return.
He didn't foresee the system where the company just takes it anyway.