This paper proposes a five-pillar model for understanding how diaspora communities create economic concentration, trust networks, business continuity, internal support systems, and long-term community wealth. The model is presented as a testable framework applicable to the study of trading communities, ethnic business networks, and diaspora economics across cultural contexts.

Drawing on the example of the Bhuta Kapol community and other diaspora business networks, the paper identifies five structural pillars — trust, internal circulation, collective memory, institutional support, and intergenerational continuity — as the key mechanisms behind sustained economic concentration within closed-loop community systems.