A professional, a friend, or a family member can only help an addicted gambler get out of their addiction if the gambler says it themselves that they are addicted and they feel like they should stop gambling as it's eating up all their time and money and it is causing issues for their life.
Most of the addicted ones won't admit that they're addicted. And that's why even with the help of those closest people that are concerned to the condition.
The help that will be taken from them is a big thing but it's still gonna be dependent on the gambler if he allows them to help him or he'll follow all of those help.
But if none of them really helps, and we've got services like this to help quit gambling. What matters to these people is that there are people that are concerned to their own welfare.