I'm not sure any company, Microsoft included, really cares about the personal desktop/laptop OS market at this point. Maybe Apple, but only because it's bundled with the hardware, which is what they really care about. Microsoft and IBM care far more cloud platforms and enterprise users. Until Fedora comes out with something like Active Directory, SCCM, Sharepoint, and the Office Suite, businesses will continue to overwhelmingly use Windows.
And most of those people will use Windows at home, too, if for no other reason than to not have to learn how to use two different desktop systems.
And most of those people will use Windows at home, too, if for no other reason than to not have to learn how to use two different desktop systems.