You are right, always gambling can lead to more losses and additions. A gambler need to limit the time he spent in a casino or betting shops and also limit the amount he spends on gambling. Without doing this thing one might become addicted and won't enjoy the fun in gamble. Most importantly, gamblers need to risk what they can afford to lose and not only money is what you can afford to lose, time we spend while gambling is also more important as money. Addicted gamblers spend more time and money while they gambling, so avoiding this thing might prevent gamblers from becoming addicted to gamble.
Repeated gambling doesn't make one addicted to gambling, it's the obsession to win gambling money that makes one to be gambling, you don't have anything in gambling than to make money and the funny thing about this is what there is no guarantee that you will make money in gambling, in short I think there is guarantee that you will lose everything you have in gambling, that's the assurance I think any potential gamblers can get if they gamble many times.
It's hard to see someone that is addicted to gambling and yet doesn't have interest in the money after. Even the people that do gamble for fun are very watchful of how they spend money gambling, they don't waste money in gambling because they want to have fun of it. It's the people that are after money they always dream that gamble such in that manner and that's the fasted way a perron cab become addicted to gambling, this is why I think when people say money is the root of all evil, I don't see any lie in there.