While this story from Business Insider is prompted by the Sprint offer, it uses some interesting anecdotal information about Charlie to paint a picture. Here's a little bit of the information:
The man behind the Dish swashbuckling is Charles (Charlie) Ergen, Dish’s chairman and co-founder. ...Here’s some key background on him:
— The self-described “country boy from Tennessee” started in the business by selling satellite dishes door-to-door with his wife, and in 1980 co-founded satellite services provider EchoStar Communications with poker buddy Jim DeFranco.
— He’s also a former professional blackjack player. Watch out, Softbank!