Mark Cuban made one thing clear - he's done with Kamala Harris. The billionaire entrepreneur told Politico senior executive editor Alex Burns that he has no interest in supporting another presidential run by the former vice president, stating that "those days are gone." Mark Cuban's healthcare mission ZUMAPRESS.com : MEGA The entrepreneur has long been a vocal advocate for healthcare reform. In 2022, he founded Mark Cuban Cost Plus Drugs Company, a venture that sells pharmaceutical drugs at cost plus a 15% markup and a fixed $5 fee, with $5 shipping.