That's correct, this is a strategy most common in our country. Once you make enough profit in gambling, you can withdraw your capital and use your earned profit as your bankroll for your next game. And if ever the gambler wanted to continue to play more, use the earned profit right away. This way you can continue playing without losing money.
It's also a common mistake to keep the balance without securing it. The reason for that is that gamblers don't want to make an extra effort to withdraw and secure their capital. Gamblers do not want to be interrupted during gambling as they might lose focus on playing.
I agree with this strategy. I think it's a very smart move to safeguard your capital once you win in gambling. Profiting out of your bets and plays is nice, but it's nicer to secure what you initially deposited and keep it from slipping away once you won. That way, you can have your peace of mind that you already have a breakeven, and then just use the profit earnings to gamble some more if you really want to gamble and play further.
You must not be greedy to the point that you will use all your funds including the capital and the profit itself to chase more money because you can go from 100 to 0 with that impulsive approach. Securing your money isn't really a bad thing and is something to be neglected because you could lose a lot if you will have no sense of urgency and logical thinking.