Mark Cuban often comes across as the most down-to-earth billionaire. He’s in his Mavs t-shirt and jeans at the game. He goes on Shark Tank and dishes out advice that lets you know he still remembers selling door-to-door. He roots for the regular guy — and rips into people who take advantage, from governments imposing recessive taxes like parking tickets to pursuers of bogus patents that tilt the playing field. There’s also the admirable fact that a very high number of Cuban’s social media posts — especially on his burgeoning CyberDust app — are words of encouragement. They’re phrased a little differently each time, but the basic message is: never never never quit.
In the Hamptons there was a — sorry — boatload of speculation about a mystery yacht moored there over the Fourth of July holiday weekend. Word spread that the 288-foot yacht called Fountainhead belonged to Cuban. It didn’t. And in explaining this to Page Six, Cuban reasserted his everyman (if really, really rich everyman) status: “The guy who owns the boat tells everyone that it’s mine,” Cuban reportedly said. “It’s so crazy . . . I don’t even own a boat.” Calling a nearly 300-foot yacht a “boat” is perfectly Mark Cuban. It’s why so many people who don’t much like billionaires still love Cuban. Of course, Cuban isn’t exactlylike regular people. He does have his own jet…