Thats true, they dont care at all that a lot of people get broke and that it destroys the life of the people though we cannot do anything about that
Everyone has the choice to play or leave the site but if you choose to play then do it with your own risk. There is no reason for the site to care about what you lose once you has decided that you will not leave the site. You cant really blamer a raper if you choose for yourself to be raped by them
Yes, no one will be the responsibility for the losses or profit of a gambler. Every gambler must gamble based on his own responsibility. That is the reason many countries have age restrictions for gambling. With the age, you will have enough maturity to continue or to leave based on your preferences.
Even all the gamblers are having their own preference along with full freedom to quit gambling, no one is opting for quit even in long run. Out of gambling addiction no one will realize their long than with gambling and they themselves feel as a beginner and their search for the fortune from gambling yet to start.