And idk what you’re referring to regarding “vulnerable”? Vulnerable to addiction? Alcohol is addictive and bars are legal. Casinos are still heavily regulated, but beyond that people are allowed to make their own decisions and gamble if they wish.
Not OP but worked in the industry and enjoying a casino visit once in a while: People left so far behind by society that they see their only hope of escaping poverty in gambling. Or people with issues (poverty, domestic violence, PTSD, ...) who don't have access to other outlets for their frustrations. Lotteries and gambling are called "taxes on the poor and stupid" for a reason!
> Vulnerable to addiction? Alcohol is addictive and bars are legal.
Yes, but you usually can't drink away your life savings in one night out (expensive whisky, wine and strip club champagne aside). You'll pass out before being able to spend more than 200$ in most bars. With gambling, it's scary how fast you can win and especially lose a lot of money - I watched someone at a roulette wheel winning 35k $ in one round (bet a grand on a single number), and lose that and more the next ten minutes.