I'd rather say, it was more of one foot in the grave and one foot in their collective cornholes. Windows 7 UI was fine. It wasn't great, but did the geniuses at Microsoft tweak and enhance? No, they scrapped and plopped that abortion of a UI onto everyone thinking it was still 1995 and they could do no wrong. Now they're scaling back the stupid with Windows 9 and 10, but the damage has been done.
I have been following Apple (after the death of the PowerPC Macs, and thus the death of my association with them as a primary PC), and the things I fell in love with in OS X were (and still are) being systematically dismantled. Yosemite just continues that trend. Since my G5 is now a printer stand, I figure I'll let Apple go its own way. It was really the best thing that could've happened. I am now running Linux exclusively and haven't missed Windows or OS X yet. No, put down the pitchforks. I am not turning this into a pro-Linux post.
Apple and Microsoft have lost their, shall we say, inspirations when the cult of the founders (Jobs being the most stark) leave (or die.) It will be interesting how they pull themselves out of this rut. It's forcing Microsoft to play damage control... and Apple's just about out of the last of the Jobs' ideas... so in time, we'll most likely see them hit the skids a little, unless they can unfreeze Jobs and let him be creative again. (or rather, be a pop-culture version of creative.)