Owning the Digital Money Stack
Stablecoins and fintech infrastructure
This reveals a control point strategy, not just a card product. Rain built the ledger logic, authorization flow, and payment connections itself so it could let a company hold stablecoins, spend through existing card rails, and avoid stitching together a bank, a card issuer processor, and a crypto off ramp. That matters because the biggest pain in digital money is not storing tokens, it is making them work inside ordinary business workflows like payroll, SaaS bills, and employee spend.
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Rain is closer to a combined Brex, Lithic, bank, and issuer processor than to a single app. Its card starts with a user owned smart contract that holds collateral, Rain extends a matching credit line, and repayment can happen from wallet balances, ACH, wire, or collateral already posted.
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That vertical buildout is the opposite of the typical BaaS model. Rain explicitly avoided depending on a sponsor bank or off the shelf partners, because it wanted a structure that would still work as rules tightened, and because crypto native businesses often could not reliably access normal banking products at all.
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Layer2 shows the adjacent strategy from the infrastructure side. It sells fintechs and banks a single stack for fiat and stablecoin money movement, and in some cases customers replace three providers with one. The common pattern is consolidation, because cross border payments break when treasury, compliance, custody, FX, and payouts sit in separate systems.
The next step is that stablecoin infrastructure fades into the background and becomes embedded inside normal finance software. The winners will own the messy middle layer that connects wallets, ledgers, compliance, FX, and card or bank rails, so businesses can move from holding digital dollars to using them everywhere without changing how they operate day to day.