And Microsoft "cares" so much about backward compatibility that they don't want to break those poorly written programs that hardcoded the system drive path to C

And Microsoft "cares" so much about backward compatibility that they don't want to break those poorly written programs that hardcoded the system drive path to C: Even the taskbar was supposed to be at top of the screen in early version of Windows, but to protect the poorly written programs that open their window at (0,0) screen coordinate, they had to move the taskbar to bottom by default :)