Yeah, you read that correctly , it says people affected by gambling problem. But after reading I took an opposing view about it because gambling therapy shouldn't be something simply painted exclusively for people with gambling addiction problems alone. In as much as you're a gambler, whether a gambler that has his gambling habit under control, going for a gambling therapy should be a habit we should acculturate ourselves with, at least twice a year (ones in every 6months).
In the medical field, there is preventive and curative medicine. Therapy is not preventive but a curing process. However, your points are valid but the process of preventing gambling addiction should be through counseling and not therapy. Gambling therapy are for those who are already having problems with betting behavior.
We go for monthly or quarterly health routine checkups not only because we're sick but to reduce any risk of getting sick before knowing. Right? same behavior can be applied to gambling , do you agree or it's not necessary until you start getting a gambling problem .
There are many free counseling services online dedicated to helping gamblers avoid disorders. So we could use these services and get the necessary help we need. But the problem with gambling addicts is that they hardly accept that they need help. They will give you many reasons why they don't need help.