Super shocking (sarcasm).

Gamblers are the whales of that industry. The industry is well aware of that and well aware of how much harm they can cause. But their paychecks depend on not knowing so they choose not to.

Same as pay-to-win freemium games. Find the whales and milk them for all you can. For every high-spender who can afford it they know full well the other 99 cannot. They know they are ruining some people's lives. They know they use dirty psychological manipulation tactics. Their paychecks depend on not knowing so they choose not to.