Mark Cuban makes his money extorting people who don't want to see him dance.

Gangnam Style is the douchiest trend to ever hit the Interney, and Mark Cuban is the douchiest thing to ever hit Earth, so it makes sense that they would be a natural pair. Also unsurprisingly, since he is a gigantic lumbering beast, Cuban is awful at the dance. Fortunately, just like he did with his basketball team, he has enough money that he can hire hot dancers to obscure from all the sucking.