TLDR Tech
Marqeta's Real Threat Is to the Banks Themselves
The framing around Marqeta usually centres on how it helped build Klarna, Monzo, and DoorDash. That story is largely told. The more interesting shift is what Milotich is describing now: the growth engine is no longer about enabling novel fintech use cases. It's about pulling volume away from the legacy issuer processing stack.
That matters enormously for UK consumer finance leaders, because the incumbents here are not just competing with challengers on product. They're now competing on infrastructure cost and flexibility. A bank running its card programme on a 30-year-old processor has a structural disadvantage that no UX refresh fixes.
The agentic commerce angle is the one to watch
The part of this conversation that deserves more attention is what modern card infrastructure actually needs to support agentic AI. When a piece of software is making purchases autonomously on a customer's behalf, the security and authorisation model has to work differently:
- Transaction-level controls set by the cardholder, not the issuer
- Real-time decisioning that can interrogate context, not just amount and merchant category
- Programmable spend rules that update without a call to a servicing team
Legacy platforms were not built for any of that. Marqeta was.
For UK brokers and lenders thinking about credit products, the question is no longer whether to build on modern card infrastructure. It's whether your current processor will still be relevant when your customers expect their AI agent to manage their credit line automatically.
The banks that lose here won't lose because of a better app. They'll lose because they can't give developers the control surface that agentic commerce demands. That's a technology debt problem dressed up as a product problem, and the distinction matters for where you invest.
- buy now pay later
- fintech
- agentic
- AI
- banking