EU has many checks and balances, is governed by Germany and other like-minded countries, and has given lots of guarantees as well as an option to leave. If Facebook decides to discuss on that level, maybe an actual agreement could come out of that.
Facebook can come and expect to discuss on the level of trust that a country gets when it has existed for less than 2 decades and has been treating its citizens/users like an authoritarian dictatorship surveillance state. There are a number of other parallels, and none of them put FB in a good light.
