Even with a lot of warnings and cautions it is the person it self who can control it, it is his will power whether to stop playing gambling for good or keep being addicted to it. Usually people who are getting addicted to it are the people who need money the most, the reason they keep playing is either they wanted to earn quick money or chase their losses because they are regretting about the amount of money that they lose but instead they keep losing and losing.
Despite the existence of reminders and warnings about the effects of gambling addiction and testimonies of people who have fallen for compulsive gambling, there are still people who can't control their urge to gamble. It is a personal choice and could only be cured through a person's willingness to change his path. People who fall for gambling addiction are those who strongly believe that they can get rich in gambling and that they are even risking everything they have. One common reason why there are gambling addicts is that they have a wrong mindset towards gambling.
You are right and this is why I don't pity anyone that lost a fortune in gambling, there is no reason to pity such people because they saw it coming, there is no way to change such people by warning them, once they made up their mind that through gambling is the only way they have achieve richly lifestyle no one can say otherwise.
What addicted gamblers don't get is this whole gambling fantasy is one in a million chance, that's why the number of people that have a good life thanks to gambling are very low in number. I believe in my handwork and my brain rather than believing in something that has no guarantee.