The higher the demand the greater the customer satisfaction with rail-5G. As such, deploying on the busiest routes makes an simple and easy business case. However, even on low ridership routes rail-5G can make a case, though mobile can now compete. The key difference is that the trackside WAN created by rail-5G is lost for all station, staff and operational systems. All technologies have their niche, the issue is getting the balance right for the optimum cost –benefit versus customer experience by delivering a flexible hybrid solutions. This is essential for any business case to work in delivering a step change in customer satisfaction that will influence the customer’s choice of rail, enabling digital system and developing the on-train market, let alone a WAN for all business and operational data.