You can, in fact, watch that particular decision being made in glorious technicolor with stereo sound, if you like. Go to https://www.youtube.com/watch?v=s6MJ5wqVvBc . That's the meeting where we decided what the blocking desktops for Fedora ARM would be. Some of the people there work for Red Hat, some don't. Amazingly we all seem to get along just fine.
edit: and btw, there are people from rather a lot of different companies working on GNOME. There used to be even more people from Sun and Novell working on it, but those companies cut their GNOME teams quite heavily. What would you have liked Red Hat to do? Fire a bunch of engineers and hurt the project quite badly (not to mention those engineers...) just so the numbers would look even?