The new rich: How these 20 Australians propelled themselves onto this year's Rich List Michael Bailey and Julie-anne Sprague, AFR Tesla chairman Robyn Denholm. (Damian Bennett) For Grant Petty, becoming a Rich Lister is more about the vindication than the money. Mr Petty, 52, is the co-founder of Blackmagic Design, a Melbourne-based manufacturer of equipment and software for filmmakers. Its products have been used on 20 out of the 30 highest-grossing Hollywood films of all time, and are increasingly popular with YouTubers and social media influencers. The company is now worth about $1.6 billion, valuing Mr Petty’s stake at $588 million. Blackmagic Design co-founder Grant Petty (AFR, Kristoffer Paulsen)