I don't know how many gambling ads you have used and how many ads you have seen but there are warnings about gambling. I have seen several notices about gambling and responsible gambling on different platforms, so maybe you haven't taken your time to patiently read them carefully. Anything that causes harm usually has a notice about it that's why cigerattes have the same thing on the pack as well
Almost no one ever wants to read the rules and start playing right away, because most often they come to relax in the game and unwind. I think drinking before or during the game is a bad idea, because our brain stops building a logical chain, we stop being who we are and turn into someone who does chaotic things. I don’t want to lose all my money in one gaming session and not remember how I did it the next morning. I want to understand what I’m doing and at least try to control it, and with alcoholic drinks I don’t have a single chance, so I tell them no, at least when I place bets.