I don't particularly agree with what you're saying but there's some truth to it. You would lose control of yourself and your finances soon as you succumb to the profit-centric mindset when gambling. But if you remained clear of and only ever gamble for the hell of it/entertainment, you best believe you'd be able to enjoy all your gambling shenanigans without stress over losing your money, or losing overall. I've seen people go crazy about losing 300 bucks in one go, can't say I blame them since that's a lot of money in the first place, but had they remained thinking that gambling is nothing but a mere pastime they wouldn't go so far as to bet beyond their means and would've probably just gambled what they think was enough and what they can afford.
After the gambler get huge profit or loss,he will became the uncontrollable person to the gambling.Because of the big win,he use to try the gambling many times using that money.So this may leads to the addiction to the gambling,if he loss the winning money.Then it won't affect the gambler.But if he loss more then the winning,this leads to the loss and gambler get into the big loss.The loss also trigger gambler to the next game.