Austrian businessman and billionaire Johann Graf has a net worth of around $6.6 billion as of 2015. Being one of the richest men in Austria, he has earned most of his wealth by founding the Novomatic Group of companies. As of now, the company is operational in 32 countries across the globe, dedicated to exporting gambling devices to more than 70 countries around the world. Hiring around 18,000 employees, his company gives him revenue of around $4.3 billion.
Johann Graf was born in a poor family, and was raised by grandparents in a single room flat. The flat did not even have running water at that time. His guardians wanted him to take control over the family butcher shop, and trained him to be a butcher during his young years. But Johann had no interest, and wanted to do something else.