I'm not too sure about that. A lot of Microsofts dominance in business comes from the ubiquity of its operating system, while IBM has _always_ been big in enter

I'm not too sure about that. A lot of Microsofts dominance in business comes from the ubiquity of its operating system, while IBM has _always_ been big in enterprise / mainframe computing and research regardless of their "foray" into PCs. Giving up the consumer market to focus on business puts this dominance in danger (even more so than the mobile/tablet threat), because someone might very well and up doing to Microsoft what Microsoft did to the minicomputer makers, and eat their business "from the bottom up". So I think the interesting question is whether Microsoft could survive and thrive on enterprise software/services in an environment where neither Windows nor Office were dominant.