The competitive moat created by temporal depth: infrastructure built over years cannot be replicated quickly by competitors starting today. Parametric memory presence requires 2-3 years of tier-1 corroboration during the model’s training window — a competitor starting today cannot achieve parametric presence until the next model generation, regardless of budget. Retroactive irreproducibility makes temporal consistency a strategic asset: the longer you maintain infrastructure, the more expensive it becomes for competitors to displace you. Retroactive irreproducibility is why early investment in entity infrastructure compounds.