The long-running reality TV series Shark Tank is smack dab in the middle of its 14th season, and a new Forbes article about Mark Cuban, the Dallas Mavericks owner and one of the show’s celebrity “sharks,” dropped quite a surprise about his possible status on the show. Cuban is on the cover of this month’s Forbes 400 Richest People in America issue with a feature that leads with the headline, “Mark Cuban Considering Leaving Shark Tank As He Bets His Legacy on Low-Cost Drugs.”…