What help do you mean here? Giving some money or suggestion to him? If it is about the suggestion, I will always be ready to help anytime. But once helping a gambler with money, I am not really sure since it won't recover him from addiction, nor their loss. We may relieve his loss at that time but he will make another loss tomorrow. So, I think it is not an effective way or the right way to help him.
There is more sense in the point you made. An addicted gambler will always be one till they fully make up their mind to stop. Coupled will self will an dedication.
If one help them with money, there is higher chances they will go back especially when he got it easily. He or she will believe they will beg and the money will come. Later help them in solving their problem than giving them cash.