Beyond the desultory drinkers is mysterious night.nba ref gambling RESINOUS DEPOSITS David Dominic Walsh AO (born ) is an Australian professional gambler, art collector and businessman. He is the owner of the Museum of Old and New Art (MONA) and Moorilla. Millionaire art provocateur and professional gambler David Walsh has officially unveiled his grand expansion vision for his Hobart art gallery MONA. A "private, members-only, high-limits, poker machine-free (casino) for non-Tasmanians, designed as an 'anti casino'". Tasmania's Museum of Old and New Art boss David Walsh spruiks to think outside the box, said the art collector and professional gambler.