These ads will more or less affect us when using cellphones because the advertisements will appear often and our attention will be distracted and press on the advertisements. It has often happened where people who see an ad just skip it but over time, they become curious and eventually click on the ad and that's when they start gambling.
Maybe blocking ads can be a solution but it requires good control and self-discipline not to care about any ads that appear when we use ads. If you can do that, it means you already have good control and self-discipline.
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.
And this is an example that show us again why banning is seldom the answer, as it does not matter how smart politicians think themselves to be companies will always find a loophole they can use to take advantage of the situation and continue mostly unhindered by those regulations, what it needs to be done is to create a campaign that alerts people from the dangers of gambling in excess and part of the taxes they get from casinos is used to help to those that have developed an addiction, but besides that there is not much we can do about it.