Comment by bobtheborg

"Community banks mostly don’t have programmers on staff, and are reliant on the so-called “core processors” ...

This is the largest reason why in-place upgrades to the U.S. financial system are slow. Coordinating the Faster ACH rollout took years, and the community bank lobby was loudly in favor of delaying it, to avoid disadvantaging themselves competitively versus banks with more capability to write software (and otherwise adapt operationally to the challenges same-day ACH posed)."

From the great blog Bits About Money: https://www.bitsaboutmoney.com/archive/community-banking-and...