If your company has unlimited funds, it can afford to purchase a print device for every user. Can you imagine that? A print device on every desk? Neither can we. Even in the best of times, profitable companies wouldn't be so wasteful.
Instead, a company will often identify a ratio of print devices to people such as one printer for every five, ten, or twenty people. Not only do they save on the cost of the print devices, but they save on electricity and maintenance.
And, for better efficiency managing these printers, they are often hosted on print servers. A single print server can host hundreds of printers.
With Windows Server 2008 R2, you can add the Print and Document Services role, ...