Most banks measure the success of an instant payments program by the day it goes live. Customers measure it by whether they trust it enough to use it again. Instant payments don't fail because of technology. They fail because customers never fully adopt them. A bank can deploy RTP or FedNow in a matter of months, and many have. Competitive advantage now comes from how well institutions turn connectivity into customer adoption. Deployment alone does not create customer value. The real work begins after go-live, and it is measured differently. Go-live is a technical milestone. Customer adoption is the business milestone. The question is no longer whether the instant payment rail is live. It is how quickly customers make it part of their everyday payment experience.