They were fined and they deliberately took a bigger fine to protect their CEO.
They ignored calls for their CEO to appear before parliament in the UK and Canada. Ignored.
I am not fully aware of the state of legislative action in the UK from the Cambridge/Brexit issue but that hasn't gone anywhere.
They are far too large to be legislated. They have too much money to fine. What possible options other than shutting the company down exist that Facebook wouldn't either pay with their 'spare change' fund or bury with lobbyists?