Great comment. But allow me to disagree on comparing Gnome 2 to OSX. In my opinion old Gnome was exactly what you're talking about: "driving off the road". It wasn't like Windows or OSX, it was its own thing, the best desktop environment, in my opinion. The only element reminiscent of OSX (only visually, not functionally) perhaps was the menu at the top.
Unity, on the other hand, is the exact replica of Gnome 3, just not as polished graphically. They both have this weird "buaaa mode" where you're typing instead of clicking on a shortcut, they both destroy virtual desktop functionality and if anything, they're basically cloning OSX bad habits: instead of switching between windows on Alt+Tab they're now switching between apps (across virtual desktops!).
So I would suggest that the opposite is happening. Instead of staying in the "new place" Ubuntu is basically trying to get on the road and follow OSX.
Frankly, I'm not even sure it's possible to "drive off teh road to a new place" when it comes to desktop UX without a significant change in hardware: we're still using basically the same computers as we did in late 80s, even the screen real estate hasn't improved much.