Many large companies are able to maintain a large number of server operators and perform essential functions without needing one person to do everything. With sufficient communication you can avoid the "too many cooks" problem. I've personally lead highly-communicating teams which avoid this problem. In short what you do is put one of the 3 in charge of different work as it comes up, load balance and collaborate.

But maybe it's cheaper and easier to pay one person a huge amount of money, and beat them up, than to create a highly-communicating organization of people (including email, IM, ticket system, face-to-face time, regular meetings, bridge calls, etc). It certainly looks simpler.