Everything's under utilised and that's a good thing
All computers (servers, PCs etc) are under utilised. When they ARE fully utilised (i.e. running at 100% capacity) the response time is so bad that everyone complains. The basic problem is that t'management buy hardware, not a service and baulk at the idea of spending £-mega for a machine that will sit around rusting for most of the time.
Although if you look in any company carpark, you'll see more £-mega of cars sitting around rusting, which nobody is worried about. That's because the owners of those fine vehicles are prepared to pay for the utility they get (i.e. not having to sit/stand beside/be groped by - some smelly stranger on public transport: rather than the utilisation they get measured in minutes of use per day.
The basic problem is that people fixate on the reports from performance monitoring tools, rather than the quality of the service they are getting.