Months ago when I heard rumors about Microsoft preparing Windows Blue based on the large public disappointment with Metro in Windows 8 I thought about writing some words on a perceived advantage of proprietary software over Free software: since users are customers, it is forced to listen to their feedback and if a development goes wrong, they will reverse it (Microsoft is no stranger to that, the most prominent example being Vista/W7), while traditionally Free software developers do it primarily for themselves ("scratch your itch") and won't care much if bleeding users, as one can see with the GNOME project.
In the meantime Windows Blue is nearing release, has changed name to Windows 8.1, will be free of charge (something unusual for Microsoft, revealing the concerns over user unhappiness) and also a half-hearted move, we learn from the preview, since Microsoft has an agenda (app store, user locking, mobiles) and still plenty of money in reserve. Also, GNOME 3.8 was released including an optional "classic" mode, ridiculed by GNOME developers as a "Flinstone" mode.
It was a good thing I didn't write anything at the time, since I was mistaken, the important attribute on Microsoft software wasn't being proprietary, but being commercial. You can see this when learning based on user/customer feedback RHEL 7 will switch the default desktop from GNOME Shell to GNOME Classic. While still kind of a "Windows Blue" move, with a lot of words intended to control the damage, it gives years-worth air bubble to RHEL and CentOS users. As for GNOME, there is an eternity until a RHEL 8 will put the question on the table again, a lot will happen until then.
Just for fun: Apple also just announced a big interface change with IOS 7, is going to be interesting to see the evolution, especially now when their reality distortion field is weaker than ever.
PS: the troll inside me can't skip this question - if there will be a Fedora spin with GNOME Classic mode as a default, will it be called Fedora Blue?