EAs might believe that, but that would be an example of their lack of knowledge of humanity and adoption of simplistic progressivism. Human traits for either altruism or accomplishment are not distributed evenly: people vary in clannishness, charity, civic-mindness, corruption, and IQ. It is most likely that differences between people explains why some groups have trouble building functional institutions and meeting their own needs. Whether basic needs are met doesn't explain why some groups within Europe are so different from each other. Southern Europe and parts of Eastern Europe have extremely low concentrations of charitable organizations. Also, good luck explaining the finding in the post I linked in my previous comment finding that vegetarianism in the US is correlated at 0.68 with English ancestry (but only weakly with European ancestry). Even different groups of white people are really, really different from each other, such as differences between Yankees and Southerners in the US, stemming from differences between settlers from different part of England. Human groups evolved with geographical separation and selection pressures. For example, the clannishness source I linked show how tons of different outcomes are related to whether groups are inside or outside the Hajnal Line of inbreeding. Different rates of inbreeding will result in different strength of kin selection vs. reciprocal altruism. For example, here is the map of corruption with the Hajnal Line superimposed. There is no good reason to believe that humans have equal potential for altruism and accomplishment, though there are benefits to signaling this belief.