Just what can be done to ensure limited exposure of this kind?
instead of limiting exposure, why not educate them about it? I mean, educating them about gambling and the risks and what it can do to people, is one of the best ways to let them know that gambling can be dangerous and there can be grave consequences when it is abused. I have been mentioning it a lot on this forum whenever a topic like this pops up that "gambling awareness" should be added as a curriculum in schools or at least a subject about addiction in general.
Creating an awareness about it is very important but limiting exposure is also a very significant step in keeping them away from it. There are a lot of things that the society educates young people to be careful of but they still end up doing those things because there are no restrictions or limits. If every gambling center of casinos can strictly adhere to the rule of not allowing underage to gamble it would make the society a better place. It's actually very concerning to see teenagers under the age of 17 playing sport virtuals, this can affect their mentality.
You are right that allowing teenagers under 17 to play sports virtuals can have adverse effects on their mental health where they should have the opportunity to grow in a natural environment. Children of teenage age should not be introduced to gambling or related matters. With the increasing influence of mobile and internet in modern society it is very important to keep children away from casino and gambling games otherwise they may become addicted as they age.