What do you think makes a person become a responsible player and why is it difficult for many?
If we take the story from the average gambler's side, they may find it difficult to become responsible gamblers because from the start they have the desire to make a lot of money so they are out of control and they feel how easy it is to earn money just by sitting and playing games (if they are lucky) so that over time they become addicted, just like the point you mentioned about passive smokers, if they have become passive smokers, it will be difficult to stop, but if they have the intention to be responsible, that desire will overcome their addiction, but gradually.
Most of the gamblers in my community except for the underage gamblers (below 18 years) play to make money. The number of children under 18 participating in gambling is increasing at an alarming rate and most of them do it for entertainment rather than for money. You cannot expect responsible gambling from older gamblers unless they have lost a lot of money. Even if you advise them to play for a short time or according to bankroll they will ignore your advice. I am not talking about everyone but about the attitude of most gamblers because they are mature in age and aware of losing their money. They want to combine gambling with an alternative source of income through earning. If you are mentally strong, you can quit smoking but quitting gambling is not easy if you are not tied to a limited budget.