It's telling when the largest maker of these devices themselves put societal controls in place to curb the excesses of this device - yet they're failing miserably too. Or are they? Perhaps the result is also what they want internally.
You don't think the Play Store or the App Store are just giving out those apps and not making money from it, do you?
The app platforms are not only complicitous, they're enabling gambling by allowing these apps at all. It would be very simple to take them all away with TOS that banned gambling apps.
What platform has the ethics to do that? None.