it may be cliche but the first step for addicts (as has been drilled into our heads) is "admitting you have a problem." this is why the first step in responsible gambling policies start with self-selection and self-reporting. Sure there are certain things that rooms and casinos can do to observe/monitor and flag potentially abusive situations (same is true for brick & mortar as well as online), but the vast majority of the time it takes the person accepting they have a problem, notifying the right people and then the RG policy is supposed to go in effect. the person has to take responsibility and flag it themselves, then the responsibility for limiting access (within reason) falls to the company. If they've taken reasonable steps to limit or inhibit the scale of participation of the self reported gambler then they have done their part.
hard to say in this specific post who is more at fault; though confidently (as is the case with most things) I can say there is blame to be spread around here. nevertheless it starts (and then ultimately ends) with the person taking accountability - anything in the middle part boils down to how they can be supported (or interrupted) in that effort.
you should be allowed to ban yourself and restrict deposit limits and even that is really doing more than their part. you gotta control yourself , everyone shouldnt have to suffer because a small percentage cant controll themselves. really just causualties of freedom that im fine with imo.