A few days ago I saw a very effective political commercial. I have grown tired of attack ads where the opposing candidate is depicted in black and white while the foreboding music plays in the background and the ominous voice-over tells of his or her evil plot to ruin our lives. This commercial was different. It was created and financed by self-made billionaire Thomas Peterffy. Mr. Peterffy, who pioneered electronic trading practices in U.S. markets and now leads discount-brokerage giant Interactive Brokers, embodies the rags-to-riches American dream. Born during World War II in Hungary, he spent his childhood behind the Iron Curtain, where he says the country’s national spirit was eroded by a system that took away the drive of its people to work hard, build businesses, and create jobs. He left for the U.S. as a young man and today his net worth has been estimated at more than…