There could be gambler who we would not considered to be addicted to gambling and still do not use this standard, as you call it, specially if we talk about people who are relatively new within the world of gambling and betting, they simply believe food luck is going to be on their side an indefinite period of time and they can allow their greed to take over, as they assume they will change their life inna single session and won't need to work again for the rest of their life.

To be aware of such standard, it requires the gambler to be aware of house edge, the ever-changing nature of gambling and control greed very tightly, the latter it is the most difficult one.