Karel Komarek started his business in oil and gas in the Czech Republic during the 1990s, right after the Velvet Revolution. In 2010, he stopped doing business with his father and sister to run his own investment group. His KKCG now invests in entertainment, information technology, real estate and biomedicine. He formed the Sazka Group (later renamed Allwyn) in 2016, and it quickly became the largest lottery owner in Europe. In January 2022, he agreed to take Allwyn public via a SPAC merger.