To begin with, how many gambling addicts go for rehabilitation??? This is not about drugs that could cause a psychic issue that would be easily noticed and calls for urgent concern, it's gambling and many of those people who are gambling addicts might at times not know by themselves and also at times, might not be noticed by others too. The latter has happened to me in 2013, despite being addicted to playing lotteries back then, none of my family members know despite living with them daily. I actually realised by myself that something was wrong, which made me fight it and was able to come out of it within two weeks.
I said all these to roar the inner mind of a gambling addict, it might be late before people started noticing and it could be so disastrous at that later stage. They, as adults are saddled with the responsibility of observing themselves regularly and exercising the necessary measure before it's too late. Everything should be done in moderation no matter how you love the thing, and in everything you do in gambling, gamble responsibly and be disciplined.
Maybe only a few gamblers who are addicted to gambling can realize that there is something wrong with them and it is gambling addiction. And these few are trying their best to overcome their gambling addiction and even fight it alone without help from others. You have proven you can fight gambling addiction and realized it was a mistake, so you set out to cure it and succeeded.
Everyone can do it if they want to realize that they have a gambling addiction and want to cure it. But on average, they don't want or are still not ready to leave their comfort zone so they still gamble. And as long as you are aware of it and want to cure your gambling addiction, it is never too late to start, whether you want it or not.