Isn't the casino just doing what every other successful business does; i.e. making it easier for consumers to use its product?
I don't hold casinos who offer legal gambling responsible for the pocketbooks of people who get addicted any more than I think MickieD's is responsible for obese people eating too much of their product. Shifting the responsibility for the consequences of one's action to someone else allows the real villain (oneself) off the hook for having to change one's own behavior.
C'mon, America, start taking some individual responsibility for the consequences of your own actions!