Maybe gambling is more harmful than drinking. Both drinking and gambling are harmful to an individual and a family and can destroy a family. In this case, gambling is more harmful. Because if you have a good source of income and you have a lot of money, then you are only harming yourself by drinking. Your family will not be affected much if you continue to drink. But gambling addiction is something that can drain even a lot of money and turn you into a pauper in a few minutes.

I don't know how effective this argument is and whether it is the case everywhere. But from my point of view, it is forbidden to promote both gambling and drinking in public. Even your social culture may differ. In some places, promoting drinking is more difficult than promoting gambling.