I am not entirely surprised by this at all actually, anecdotally I have always felt people who achieved success where mainly in the right place right time. Whether that be born to a certain family or class, or to a certain country, or area of a country, these things all effect where we will end up. Good to know us average folk can still make it in this rigged world

For me intelligence is still the key to success. Being rich can be through luck or talent and even hardwork and with strong determination. It depends on the person. If he really wants to get rich there is a lot of things to do especially your attitude. Sometimes you are also at the right time.