Albert II, Prince of Monaco
Prince Albert II is one of the wealthiest royals in the world, with assets valued at more than $1 billion, which include land in Monaco and France. Although Prince Albert does not own the Prince's Palace of Monaco, he does own shares in the "Société des bains de mer de Monaco", which operates Monaco's casino and other entertainment properties in the principality.
Succession to the Monegasque throne
Until 2002, the crown of Monaco could only pass to the direct descendants, including adopted children, of the reigning prince. As a result, Princess Antoinette was not in the line of succession and Princesses Caroline and Stéphanie would have lost their places in line at the moment of Prince Albert's accession, and there would be no further dynasts eligible to succeed to the throne.