I think it would be better for casinos too if there were no gambling addicts. If everyone was gambling responsibly, the negative connotation surrounding gambling would disappear and without it online casinos would surely get more customers in the end. After all, their aim is to make profit, not to create problems for people.
I don't think that the negative connotation stops people from gambling or makes new gamblers stay away from it, so that isn't a reason why casinos would want everyone to become responsible gamblers but they would want every gambler to keep spending as much money as they can because they know once the money has entered their bankroll, there is nothing that can take it away from them even if the gambler starts spreading negative news about them.
Casinos, their owners, and the management barely care about gamblers' sentiments or their personal lives. All they care about is their businesses and they are not wrong about that. If I were running a business, I would surely want every customer to come and use my business and products as much as possible since that will bring more revenue for me and my business.
The reason is because the casino have rules, everyone believes an adult should be responsible for their actions or decision. It's not that they don't care about addicted players. Casinos work hard not to accept a banned addict into their casino. Mainly in online casino. Yet players always have numerous methods of bypassing these restrictions. It's the duty of players to gamble reasonably and not fall victim of problem gambling. The casino won't be there to assist anybody to stop playing gambling. That's why OP's website is crucial in changing the lives of addicted players. Not sure if addicted players affects the gambling traffic. Instead it gives it more publicity. Without gambling addiction, the society will honor the business, and maybe a huge number of people would have joined. But, that's not a good idea of any business. It will only reduce the value of gambling and thereby pump money at the initial stage, then later the same people will prefer to stop. Gambling can't be for all the people. Whether it provides less addiction or not. Moreover, people must get addicted to something. No way gambling addiction won't exist, when there is sport addiction. People who must watch a football match to be happy. It's better to have a traffic we can control and satisfy via customer service, than an uncontrollable traffic. Casinos still make money, from both addicts and responsible players.