As long as MSFT has no serious competition in that area, they will be a viable company. If Apple wants to kill the MSFT-dragon for good, they've got to come up with something better then: Windows Server Sharepoint SQL Server Exchange Server and how MS Office/IE/Outlook integrate into all that server eco-system. The problem for Apple is they would need to hire a few 1000 employees to create a real "Enterprise" edition and by the time they got ready to present a full solution we're talking a minimum 5 years. By that time MSFT will innovate further. Maybe Apple should stick to the consumer and forget enterprise.