Yeah. Your description is perfectly true but you don't really get to see people go broke on that kind of play all the time. You make it sound as though it's the norm. People on a losing streak happens a lot. Whether they double up to catch up or not has nothing to do with a planned Martingale. Martingale players bet when they sees their interpreted opportunity. People chasing after losses are on tilt. Martingale is used for a reason. The ease of winning with enormous probability. If you don't have problem with winning, don't use Martingale because you are actually giving up all hopes of winning big.