An entrepreneur in Australia could make amass significant amounts of money selling tombstones with the epitaph “He/She Sat ... A Lot” carved on it. This simple statement, would, I am sure, cover 99% of Australians and could be produced in bulk for a small cost then sold to the consumer at much higher cost. The market is virtually limitless.
It's hard to over-state the amount Australians sit. Traveling around the country camping (although strictly, sleeping in a caravan is not camping) it is striking how much Australians sit. They will sit all day in their cars driving to a camping area, then, get out and sit down by their caravans. Entire days, weeks, even, will be spent sitting at camp sites. In Paleo World, people believe “sitting is death.” In Australia, it is a way of life.