Cathy Wilcox hits the nail on the head. Any societal good that clubs bring by spending some of the money they make from problem gambling is more than outweighed by the societal damage of problem gambling.
It's much like the very disingenuous astroturf campaign against plain packaging of tobacco products. They claimed it wouldn't work, and spend millions on a campaign to tell people this, which was a good indication they thought it might work. Ditto the gambling industry.