Earlier quoted context omitted.
> Perhaps Facebook believes that the regulator has stepped beyond its legal authority and would prefer to have a court decide the matter? Then they can contest the injunction and if wasn't justified, it will be revoked. But they can't just ignore it.
Apparently they can just ignore it, though, at the risk of whatever consequences would apply. I confess I do not know the details of the legalities around this particular injunction, whether it behaves like an American injunction, etc. I notice that not a court but a commissioner issued this injunction, and not even a commissioner with authority over all of Germany, but one just within the (state? province? municipal…
In the long run, you can only operate in a jurisdiction in which you are welcome. Especially when your position is unique like Facebook's. A foreign company that openly ignores the law is not and I can only attribute Facebook's behaviour to arrogance.