A company like mine
We're a small nonprofit, about 130 machines, 10 networked printers, six servers and fifty people using remote access. We have no budget because we're a nonprofit that serves abused and neglected kids and our funding from the gov't is nonexistant and we have to fundraise, so IT gets the short-shrift. Because of the remote access part, 50 computers take up 100 IP addresses (one for the work machine, one for the remotely connected home machine). To go around and dump every last subnet statically set on each server, printer and computer in this agency when we're a two-man band would be a nightmare, and in this scenario, we're only rolling over into the additional scope by 2 or 3 addresses, once in awhile. It makes much more sense to do it this way for us, than to resubnet. Long-term we will have to resubnet, but this is a great solution for us and hasn't resulted in any additional traffic or any additional time or money.