Gambling is about freedom of choice & people should take responsibility for their own actions. Gambling is little different to smoking, alcoholism or drugs. No one holds a gun at anyone's head & forces them into it.
If you take this analogy then no one is holding a gun for addicts, they are doing that on their own, there are gambling addicts and no one can hide from it, there are people who gets addicted to the things they do and if they are addicted then the people around them should them the person get the necessary treatment as addiction is one and it can destroy your life.
When viewed from a religious point of view, gambling is indeed prohibited let alone the money generated from gambling.
Not a religious person so not sure what you are talking about, is it prohibited by religion and if so which one and if so are you living by the rules all your life. If there are restrictions in life then you could not do literally anything in life as there could be some sort of restrictions one way or the other.