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The gravitational lensing evidence suggests the existence of massive and relatively dense regions of dark matter. However, if dark matter interacts only gravitationally, what would stop it from collapsing to a black hole of any size? For example, if there is a cloud of a dark matter gas of the mass of the Moon, and this cloud over time condenses under its own gravity down to the size of the Moon, then what would hold this object from quickly collapsing to a singularity with no electroweak of strong force to resist the collapse? Would the Pauli exclusion principle apply to dark matter to create a degeneracy pressure preventing the collapse?