Users have to wait to use the printer or copier or use a device that's out of their way.
The office manager has to take time out of their day to place a service call (if the office has a service or MPS contract). Or take the time to find a company to come service the equipment – and hope that company is experienced with the brand and model of the equipment to be repaired.
The perfect mix of equipment prevents over or under use of copiers and printers. Overuse is obvious – if you use anything more than it's designed for it will wear out faster. With copiers, under use is also an issue – like a thoroughbred horse, high-speed devices need to run to stay in great shape. Use them too little and they can break down.
The right mix of copiers and printers also means focusing on security, accessibility, controlling print output, and business productivity apps included with different copiers that boost productivity.