You get downvoted because you are very wrong, Ubuntu used GNOME or Unity, this desktops were very different then Windows, they had a top bar or side bar, they had 3D compositing before Windows released Vista, menus were not invented by Microsoft, MS did not invented the clipboard, keyboard shortcuts, I don't think they invented the "window" either so what is your point exactly? that Linux DEs should be forced to use things different then Windows