I'd like to see some numbers about how many people struggling with gambling addictions compared to how many people struggle with in-game-purchase addictions. Both share the negative reinforcement of spending money. In exchange one gives you the positive reinforcement of playing a game. Another gives you the positive reinforcement of money. I have the feeling money is a 10x more potent reward.
This is to say, the gaming industry makes games that are a problem for some people but I'd like to see some hard numbers comparing it to gambling before I would say the product is as dangerous as gambling on a population level.