Modern institutional psychiatry serves an administrative, stabilizing function within hyper-capitalist socioeconomic frameworks, translating systemic collective crises into localized, individual pathologies. This paper provides a rigorous socio-economic and methodological deconstruction of contemporary mental health nosology, focusing on how capitalist boundary orthodoxy artificially isolates the human subject from their vital relational and environmental infrastructure. We argue that the widespread diagnostic assignment of personality disorders, complex anxiety, and depressive spectrum conditions serves to privatize human suffering, transforming rational, somatic adaptations to systemic isolation, economic precarity, and severe relational trauma into intrinsic neurochemical or behavioral defects. By re-evaluating the atomized individual paradigm through an open-system ecological framework, we demonstrate that the enforcement of hyper-individualized behavioral boundaries serves the paths of capital accumulation rather than human stabilization. Ultimately, we advocate for a paradigm shift toward an objective relational epistemology that de-centers chemical containment and individual pathology, re-centering mutual interdependence, somatic safety, and collective material security.