I think the point is that this only works in the aggregate. Individuals in a group/organization/society can make small positive decisions that improve the likelihood that any individual in that same group will get "lucky".

There's a sort of "freeloader" problem, though, which is that the ones who get "lucky" don't themselves have to be making positive choices. In fact, being a selfish individual in a group of generous ones can be an easy way to get ahead - as long as you can get away with it without being noticed or punished.