We investigate the possibility that dark matter may not correspond to an undiscovered particulate component, but instead emerges as the gravitational manifestation of hidden geometric degrees of freedom within spacetime. Motivated by persistent non-detection of dark matter candidates and by the conceptual tensions surrounding black hole singularities, we propose a unified framework in which dark matter, black holes, and symmetry restoration arise from a common geometric origin. Building upon the concept of dimensional sufficiency, we reinterpret black holesingularities as regions of geometric saturation, where spacetime reaches a critical limit in its capacity to encode compression. In this regime, black holes act as local symmetry restoration thresholds, potentially reversing low-energy symmetry breaking associated with the Higgs field, chirality, and vacuum structure. This allows for the reactivation of hidden sectors, including supersymmetric remnants, mirror CPT sectors, and non-collapsed components of the cosmological wave function. Within this framework, the Einstein field equations are extended through an effective stress-energy tensor incorporating both visible and hidden contributions, leading to a natural reinterpretation of dark matter as hidden geometric capacity rather than missing mass. The observable universe is thus described as the collapsed fraction of a larger cosmological wave function, whose remaining structure remains gravitationally active but observationally dark. We discuss potential observational consequences, including modified gravitational lensing profiles, deviations in black hole mass—radius relations near critical capacity, and structure formation signaturesarising from gravitational coherence rather than particulate halos. This approach preserves the empirical success of ΛCDM while shifting its ontological basis from unseen matter to incomplete geometric visibility. In this perspective, dark matter is not an additional component of the universe, but a manifestation of its deeper structure: a gravitational imprint of degrees of freedom that remain beyond direct observation. Dark matter may not be missing matter, but missing geometry.