From Newsfactor, quoting a Goldman Sachs report on Linux:
Linux will emerge as the dominant operating system in corporate data centers. IT buyers will use Linux to take advantage of lower-cost, higher-performance Intel-based servers and to avoid “premium-priced proprietary systems.” Eventually, systems running Linux will displace systems based on Unix and RISC processors.
“Many observers confine Linux’s enterprise opportunity to the market for low-end ‘edge’ servers such as file, print, Web, and e-mail servers,” the study, entitled “Fear The Penguin,” notes. “But we are confident that the technical developments and market forces are in place for it also to become the dominant OS on the higher-end servers of the enterprise data center.”