France is extremely unattractive for research. Lecturers positions suck (high teaching load and you need to speak French). Full-time researcher positions are extremely hard to get, and they pay very little, especially junior position. 2500 euros per month, which isn't enough in Paris and just ok in a smaller city.
Now it's the EU's turn. Computer science is already becoming very, very French. See you guys in Grenoble.