Crystal Reports is used in across the whole organization. It is a powerful tool that addresses many business problems in our organization. I use it for reports that allow me to manage product inventory and pricing, as well as analyze sales reports and success of marketing promotions.
Crystal Reports has worked for our business for years. I see no reason changing software at this time. It is powerful, and once trained, an employee has the ability to run reports that improve the performance of our business.
I would say it's great for companies who use a lot of data and need flexibility to leverage that data. I would ask how much data the company has. If there's not a lot of data, a product that is a little easier to get up and running (Access, Excel, etc.).