Well, Nokias(and Intels?) vision for Meego has no GTK in it. I wouldn't call that Gnome tbh. The GTK/Clutter stuff is Intel/Moblin legacy cruft.
And I wouldn't blame the OEMs as much. Canonical doesn't want to be your regular Linux distro vendor anymore. That is why I said that Ubuntu _Desktop_ (think even 11.10) will most likely not ship with Gnome 3.0. Canonical can't outdo RH/Novell on that one, so they will avoid that battle altogether and ship a pimped Unity (or something along those lines) with the default desktop. They picked that name for a reason, they want it on netbooks, desktops and touch devices.
They still profit from new Gnome technologies (Mutter, Clutter, etc), but what the user sees will be totally under their control and effectively create (albeit very weak) lock-in. Building your own UI ontop of Mutter/Clutter/JS is still hard, but not nearly as hard as it used to be.