Banks don't typically innovate, they adopt other's innovations. Electronic checks, not ACH, are the fastest, safest and lowest cost payment method in the US, and they already work with 100% of checking accounts, unlike ACH. The Check 21 Act enabled the future of payments in the US, and that is real time fully electronic bank transfers using check data, but big banks control ACH and the card industry and have been hesitant to adopt new technology that would disrupt the ACH and card networks. That is all about to change in a very large way.