The European Securities and Markets Authority proposes prohibiting every licensable crypto-asset service involving stablecoins that fail applicable EU Markets in Crypto-Assets requirements. The proposal would extend restrictions beyond trading to custody and transfers, including services for existing holders who no longer trade. ESMA's September 30, 2026 submission is not an enacted amendment and provides no implementation date, withdrawal exception or wind-down mechanism. The proposal does not itself ban personal ownership, freeze tokens or require conversion. Historical exchange-volume findings do not establish the affected EU custodial balances or a change in global stablecoin demand.