For such a behemoth of a company as Microsoft, it is incredible how many failures it has put out to the world, critical or commercial. MS-DOS 4.0, Microsoft Bob, Internet Explorer 6, Zune, Kin, Lumia and Windows Phone, Kinect, Surface RT, Cortana, Band, Copilot, and every other version of Windows since Me (including Windows 11, out of privacy concerns), those are just the most glaring examples. Truly amazing, Microsoft. Truly remarkable.