I'd be interested in an game-theory, microeconomic treatment of decision making differences between people in different economic situations. If they study went

I'd be interested in an game-theory, microeconomic treatment of decision making differences between people in different economic situations. If they study went one step further and showed how those micro decisions aggregated into macro inequality, that would be interesting to me as well. Please, if someone knows of some research along these lines I'd love to dive in. I've done a bit of searching and it seems that most economists focus on the already somewhat wealthy individuals or entities when it comes to real life somewhat messy decision making or the poor only in aggregate.