When making business decisions, CIOs typically remain loyal to a select handful of vendors that they know and trust. But over the last few years, several companies that CIOs once relied on have undergone major changes. And now, it appears that some of those firms are failing CIOs. Perhaps these vendors are simply adapting their businesses to suit our changing technology times. But, for CIOs who need the best solutions for their employees, waiting for a vendor to determine which market matters most is a serious drawback. Here, we take a look at some of the technology giants that are not providing the enterprise-level of service that CIOs require. Some of these companies might seem rather obvious, while others will surprise you. Here's how these nine are falling short for CIOs today.