Great read, here is an excerpt about his involvement in the NBA...

Even his well-publicized battles with the National Basketball Association (NBA), which has fined him millions of dollars for his outbursts, had a purpose. "They're coming over to me now," Cuban said. "A lot of these things, I was right, and now they'll make changes, and that's why I've been quieter because now they'll listen." He used to erupt before because "nobody was listening and the only way I could protect my investment was being loud about it."