I fully agree with you, some countries ban gambling because of its negative effect like addiction, like China they are a country with the most number of population and if only gambling is not illegal in such country imagine how big it will contribute to the gambling industry, that would certainly make gambling sites more profitable.
This is not such an obvious question as it seems. If I remember correctly, poker lost a lot in development when some countries began to regulate it more tightly, and some completely banned it. Given the fact that the internet space is globalized, I do not think that in this area we will move towards weakening regulation. On the contrary, there will be more prohibitions. And most of these prohibitions are related to gambling addiction, which is inseparable from gambling.