Many people have committed suicide due to gambling depression, not because they feel pressured by gambling, but because they can't control themselves due to excessive losses.
Perhaps suicide will help them overcome the depression or debt they experience, as people who gamble to the point of suicide often gamble with other people's money.
These individuals are usually quiet and don't share much with others, making it difficult to get help.
It is their responsibility as they must know that gambling is risky if they bet irresonponsibly. All casinos have warnings, reminders about Responsible Gambling and even without those messages, careful people must organize their finance well enough in order to assign small part of their fund for risky things including gambling.
If someone destroys their finance by bets, it's their responsibility and it's not responsibility of either the gambling industry, the casino or the game provider. Generally, risky activities in finance are only deserved to be assigned with smallest part of an individual finance.