Given the scruples of those running the house (Lottery, Casinos, Government etc.) I'd say there's nothing illegal, immoral or anything otherwise about it. If a loan shark gets their legs broken and they're robbed of their ill gotten gains, who do you blame? Exploiting people's weakness for quick rich schemes, gambling, alcohol, drugs, insecurities and fears is as immoral as those manipulating their systems for their own ends. As far as I'm concerned, good on them.