Addiction will be there since they still allow casino that will comply to their requirements to operate. They impose ban for those illegal casino that operates in their country. So with these they didn't totally eliminate online gambling on their country and they just want to regulate all of those illegal casino since somehow this could give huge revenue to their country.
Maybe those protection towards addiction is just an excuse, but provably the main intention of those things happen is to get some revenue to online casinos that will comply to the rules they set.
But again for sure, there some ways to continue to participate on this activities and provably some old time gamblers would use some tool to access those online casino and get back to their usual activities.
That will be a difficult for the government if they see the gambling addiction matters in their country increase because that needs a seriousness to take care. They can impose ban for those illegal casino that operates in their country but that doesn't guarantee the other illegal casino will close their business. We know that the illegal casinos can running their business in the underground without many people knows.
That will needs work hard and smart from the government to search for the rest of illegal casinos and close or ban it. But what they must cares is their citizens because that numbers of gambling addiction can increase anytime. They must use different approaches to closest to their citizens and explain all things in details. If their citizens realize the danger of playing gambling, they will start to reduce their gambling activity or even they will stop gambling because they don't get the benefits of gambling.