If you get into the real issue of power dynamics, then you realize that resources are not what is important. What is important is the social relationship between two classes - the class of heirs who expropriate surplus labor time from the class of workers who create all wealth.
The very deep but unspoken assumption in the hegemony spread by the heirs is this revolves around resources. From the perspective of the worker who may not even contemplate it, is that this revolves around relationships.
Even the name of the study shows this. Originally, people studied political economy. As the study itself became political on the side of the current ruling class, the word political was dropped, and the scientific sounding -ics suffix was attached - economics.