You have to climb to the very top of an elegant building in the 8th arrondissement of Paris to reach the antechamber of Monsieur. That is what people here call Bernard Arnault, CEO of LVMH, the richest man in France, who heads a global luxury empire with 75 brands (Dior, Vuitton, Bulgari, Moët & Chandon champagnes, Sephora stores...) that posts annual revenue of €80.8 billion. Among themselves...