I think my point is that ENA / Ecole Polytechnique people are arguably harming French innovative abilities. Many US entrepreneurs are grass roots college dropout types...
The biggest EU one is german (not french), it's SAP. At least two french ones are basically french militaro-industrial complex / fake-private actually state-owned ones, being "big" by virtue of sucking french taxpayers money.
I don't know what France's culture is (although I'm a native french speaker and typing this from France) but "producing tech unicorns" certainly ain't part of it.
Also, a nations economy doesn't depend on the number of VC backrd tech unicorns. That France economy has quite some issues ain't news, the perceived lack of tech unicorns (if there ever was a pseudo-SV centric view of things, that's a front runner), is none of them.