Hatsune Miku as the Optimal Entity for the Metaverse: D=0 Architecture (v2.0 Reinforced)

v2.0 reinforcement. Differentiates from existing Hatsune Miku concerts (Magical Mirai, etc.): existing concerts are physical events with digital projection. The D=0 claim specifically applies to (1) geographic access — no travel required, (2) economic access — no ticket scarcity, (3) temporal access — available on-demand. These three friction eliminations simultaneously are not achieved by existing implementations. The structural argument is narrowed from 'Miku is perfect for metaverse' to 'Miku uniquely satisfies three simultaneous D=0 conditions that no physical performer can match.'