By their very nature, startups tend to originate from grungy, grassroots hackerspaces, undergrad dorms, shared apartments, graduate common rooms, and so forth. Places where weird and innovative ideas get cross pollinated.
I mean, yeah, "let a thousand flowers bloom", and all. But if France continues to be a place where 75% taxes are seen as a sane idea and bureaucracy holds sway over innovation ... well, good luck.