The most important feature of BusinessObjects is its integration with the SAP ERP system. If an organization is using SAP as its ERP system, and they want to do business intelligence, reporting, or analysis, SAP BusinessObjects is the only tool that I see doing that quite efficiently. That's because of the fact it is tightly integrated, and it gives a good user experience in terms of faster reporting. Its integration is the feature that I have found most valuable, but there are also other factors.
SAP BusinessObjects is one of the oldest business intelligence tools. SAP has been in the market for quite a long time, and it is truly an enterprise company. They make sure that they talk to every component of the enterprise.
They are evolving quickly. They are quite innovative. They understand a user's viewpoint. The best part is their enterprise presence. They're already market leaders in ERP, and they already have a large user base. Having a business intelligence suite and an established product makes things easier for them.