The law is just mere words if you don't have an army, the guns, and the will to back it up. It has never been different. Louis XIV's wrote "The last argument of kings" on his cannons, in the 17th century.

Guess who holds the guns that protect Europe right now? So yeah, either comply, leave (what I did), or create an alternative. The EU had Viadeo[0], it could have pushed it to have an alternative. It didn't.

[0]: https://en.wikipedia.org/wiki/Viadeo