Actually when a gambler has gambled with what he did not allocate properly for gambling, then it is a sign of an addicted gambler.
Such as an allocation of $ 50 for each week, but when the gambler finally allocates all his salary to gambling, then we can judge that the gambler is addicted.
The actions of the gambler beyond the limits you mentioned have made the gambler seriously addicted. Because the efforts made have involved other people to feel the loss. The impact of gambling addiction is indeed quite large on a person's life, especially their financial and social.
Yup what you said is also true that actually we can know whether the person is addicted or not, namely from the amount of money they allocate and we will know whether the amount is the amount they can afford to lose or not, namely when they have entered the end of the game, especially when the game ends in defeat, because when a gambler is addicted, usually they will not be able to hide their disappointed reaction or response from their facial expression which of course means they don't like defeat. Basically, addiction is indeed a very terrible situation, the impact can indeed lead many people around us, such as in loan problems and besides that, another problem is that it is very difficult to recover from the addiction and that is the reason why we always remind them, especially beginners, to be more careful and not to put too much hope in winning.
That's a sure sign, because when they are not ready to lose they might feel upset and what they will do is to bet again in the hope of winning the next gambling session, but considering the uncertain victory, the gambling session they do will not guarantee that they will be able to win so when they experience another defeat what will happen is their emotions will be increasingly called and allow them to lose control of themselves.
I agree with what you said, this addiction is not only detrimental to themselves or the perpetrators themselves but can also harm people around them because there have been quite a few cases where they lose control of themselves and other people are affected by the annoyance of the main perpetrator of the addiction.