What many are finding is when the time comes to add the next server or upgrade a server they have. It can be less expensive and less disruptive to the business to simply use a data center service provider to fill the need. The business can focus on their core competency and pay a service to keep the power on, the connections to the internet up, the servers running in secure hardened environments purpose built to run 24/7. One key part of that is at least two sources of power and two paths to the global internet all backed up my matching networked centers in different geographies. That way no single disaster can take a service down. You bet that does cost more than a server(s) you may already own running in a closet somewhere. The question is what will the next server or upgrade costs and you can you do something better with that spend that just repeating what you did in the past. When you start paying your own people to watch those servers running the business case gets much easier.