I don't think blocking ads would impact someone's curiosity. It would only increase illegal ways to promote a casino. In my country advertisement of alcoholic beverages are banned on media. To counter it these companies came up with an alternative. They started promoting sparkling water with the brand name on media. Knowing gambling industry they would come up with alternative options to counter such a ban. Moreover this topic is about Australia and not the globe. Internet is available in Australia and the gambling industry would use this mode to advertise their casinos.
It depends on each person. If he really wants to avoid gambling, he is helping himself to try to ignore gambling ads by blocking ads. But if he still had one's curiosity about gambling, he would return to the casino and gamble again. And even if the block came from the service provider, he would gamble again if that person was still curious about gambling. So, in this case, the attitude of someone who wants to avoid gambling must be clear so that he can avoid gambling.
actually even laptop and computer mate , ads are coming from everywhere the internet nowadays , they are good in dealing with this and yes we are now immune to it.
Ads come from everywhere and it depends on how we treat them. If we were okay with the ads, we wouldn't care.
but the question si , do the government or the authority willing todo this? because we knew how much money are flowing in this.
Maybe for countries that prohibit gambling, the government will strictly prohibit it. But for countries where gambling is prohibited, there may be an agreement between the casino and the government and advertising service providers.