Good observation. The toy model in the paper has some obvious limits, for example it also doesn't account for accumulated capital allowing to "create your own l

Good observation. The toy model in the paper has some obvious limits, for example it also doesn't account for accumulated capital allowing to "create your own luck" nor exploit successful events more easily. However, neither accounting for endurance nor wealth changes the fact that luck is a main determinant of final success. Those with early luck will not need endurance to survive, and those with the longer overall run of lucky events will come on top of those with fewer lucky events.