Processor Stickiness and Vertical Integration

This reveals that middleware BaaS vendors are easier to buy than to leave. Bond can hide i2c during onboarding by bundling the processor, bank coordination, compliance work, and card program setup into one contract, but the actual card ledger and transaction engine still sit underneath. Once a fintech is live, changing that engine means moving the system that authorizes swipes, tracks balances, and keeps cards running without downtime, which makes processor choice much stickier than the surface API suggests.

• Going direct to i2c or Galileo usually gives a fintech more control and a larger share of interchange, but it also means managing the bank, network, processor, and vendors itself. Middleware earns its keep by taking on that coordination, not by making the processor fully interchangeable.
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• The hard part of switching is not rewriting docs or endpoints, it is migrating the live transaction core. In card issuing, downtime can strand cards at the point of sale, so large programs rarely do true rip and replace unless the gain is overwhelming. That is why incumbents can keep scaled customers even when newer stacks look cleaner.
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• That dynamic helps explain why newer models are moving toward vertical integration. Recent winners like Column and Lead Bank bring the bank, ledger, payments rails, and compliance stack into one roof, reducing the handoffs and hidden dependencies that made middleware stacks operationally fragile in the first place.
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The market is heading toward fewer layers between the fintech and the core system. Middleware remains valuable for speed and abstraction, but over time the strongest platforms are likely to be the ones that either own the processing stack outright or collapse more of the bank, compliance, and ledger workflow into a single system.