That is an explanation however this is not the correct way to go about this, a society that prides itself on how they are so liberal cannot go around banning gambling ads, what is next? Banning alcohol ads because the young are drinking too much? The young are not going to stop doing it just because the governments does not allow advertising anymore, and the same is true with gambling, the young will do whatever they want and they will keep gambling even with this ban.
The continuous advertising by the gambling company is to keep up reminding their players, and on about new features they added and new bonuses and new promotion they have, there are occasional gamblers, these gamblers only play when there are new promotions or bonuses, without these promotion and giveaways advertising, there's no way to reach out for them.