Good point, change is everywhere and without luck's permit the chance of winning is too slim, though there are times that strategy may work and if the timing is right you may be able to make money out of it
Yes, winning happens when someone's luck supports him/her, even if someone's strategy is weak but luck is good, that person still has higher chance of winning. In trading strategies work pretty well, and in that area luck doesn't play much role, while in gambling someone's luck is far more important than any strategy.