He's one of the only french businessmen having actually disturbed anything in France, a country where "innovation" is usually driven by publicly owned big companies and public grants. He has driven telecommunication prices down dramatically with his internet provider company, and then his mobile phone carrier. Internet is cheap in France mainly thanks to him.
I trust him probably more than anybody else in France to actually achieve something disturbing the system in place, precisely because he's one of the very very few that has done it before and he does not come from the elite making system of "grandes écoles".
Amusing fact, he started his fortune with sex messaging newtorks on the french precursor of internet, the Minitel.