If you want to know how much money you need to have drowned before gambling becomes the issue then you should also ask how much money do you need to win before you know that gambling is also the problem.
If you know that before you make any gamble that there are chances that you either win or lose then you will not need to know how much you need to lose or win before you call it a day. Gambling will not be your major problem if only you can gamble responsibly.
Many years ago, I lost a sum of money that would have been enough to buy a used local car. I took this money out on credit from a bank. Now it’s hard for me to imagine that I was capable of such a thing. How deep did you have to get into gambling to do that? It still remains a mystery. It was most likely already an addiction, and a very serious one. At that time, I didn’t have this understanding. It came later, when people close to me started telling me about it. Even then, I didn’t want to believe it, but I still had to come to the realization of this fact. Through force and pain. How else?