Online gambling has also been the focus of inquiries, but with its increasing prevalence, the government has answered consumer advocates with a pledge to take a deeper look.
Australia overtook Britain, which has nearly three times its population, to rank third by online loss, behind the United States and Japan, said H2.
The new centre-left federal government this month said it will hold a parliamentary inquiry into online gambling, though some recommendations of a 2015 inquiry are yet to take effect.
"At their fingertips they have 24-hour access to gambling online.
Wareham, the coffee technician, said he no longer uses poker machines and that family responsibilities help him control his online betting.