How did the richest man in the world Bernard Arnault become so rich?

The richest man and richest woman in the world are both of French nationality, Forbes calculated. Françoise Bettencourt Meyers is the heiress of the l’Oréal dynasty. Bernard Arnault himself acquired his fortune of 211 billion dollars, or about 193 billion euros. How did he do that? And has he already decided deep down who will succeed him?

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