Sorry but I disagree with you, illegal or legal casinos are no tool to gamblers becoming addicted to gambling, gambler who are addicted became addicted on their own based or as a result of their own decisions and indecision.
Yes, that's true, the casino won't make someone addicted to gambling but it's ones own actions that either make them addicts or not. Those who gamble a lot often end up as addicts and those who gamble in moderate way doesn't get addicted at all. That's why one should learn about gambling responsibility so he/she won't get addicted to it.
Yes it is true. Casinos are never enough to get people addicted to excess. Individuals are particularly addicted to gambling which can be from any level of gambling board. However, many people may be a bit hesitant to visit a physical casino due to social constraints. Online casinos may be useful for them, but one should be careful not to become addicted.