Without immigration France does not have a healthy demography. As much as I am against exploitative forms of immigration, France has strong Unions and Strikes are their national past time. Not an expert in French economy, but a first hand look is their major corporations are luxury brands but the rest of the economy is a meh! Airbus is a collab with other EU countries and perhaps Dassault and a strong defense sector. I would be surprised if French economic pie is not dominated by government and its private sector is rather limited.