Things are moving to much fast in our networking industry. Over years, networking depended on vendors releases and products. Current users are more demanding in terms of rapidity and new useful services. Networking endpoints are now not just computers and servers, but everything with just a networking stack embedded -- network-capable devices. The number of users are growing very fast and each user represent more than 1 endpoint. So the design of systems are not just based on the number of users/customers of a given service [ Of course, it depends on your service policy ].