Will the free Windows 10 update, HoloLens and SurfaceHub be enough to restore Microsoft´s hegemony?

In its product presentation of 21 January Microsoft announced a few interesting things. The update to Windows 10 will be free for Windows 7 and 8 users, Windows 10 supports Surface touch screens up to 64 inch, SurfaceHub will allow a group of people to work on a project, and, according to Microsoft, Hololens is the beginning of a whole new user interface with 3D gestures. You can view the complete list of innovations on Microsoft´s website. Within the next 12 months we will know this is enough to restore Microsoft´s hegemony. It all sounds very promising and if nothing else it will keep Google and Apple on its toes.