Moody's Warns Banks Are Now Captive to a Handful of AI Vendors — a Single Provider Outage Could Hit Multiple Sectors at Once

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Moody's, in its Bank of the Future series, found that most financial firms now depend on a small group of foundation-model and cloud providers, creating a systemic dependency where one provider outage ripples across customers and entire sectors simultaneously. The report also flags pricing-power risk from that concentration, plus operational, regulatory, litigation and cybersecurity exposure — while noting AI-related financial gains across banking remain modest so far. Regulators sharpening focus on AI-stack concentration is the leading indicator here: it's the mechanism by which model-vendor choice becomes a compliance question rather than an engineering one.