Excellent point, Jon, but there's something else that we're missing in this discussion, and that is the fact that we also have had many instances where there was a big push from the artist (or key members of the group) to get some surround sound releases out there.
When we have an artist that is passionate about surround sound (King Crimson, Jethro Tull, XTC, Yes, Genesis, Talking Heads, Depeche Mode, etc.) things get done!
That is the most symbiotic relationship that produces the best results, the artist (or key members) working closely with the label on these releases, and that is a big part of what is missing from Audio Fidelity's releases.
Sure the artist might give the go-ahead for these releases, but there's not the same kind of passion and involvement in these releases on the artist's end as I have seen on many of the best releases featuring remixes from Steven Wilson. Just imagine how much better some of these AF releases might sell if AF partnered with the artists for advertising on the artist's website, email newsletter, and other social media pages. I would bet that a big chunk of these artists' fanbases do not even know about AF's releases, but I guess it's a little too late for all of that now.
Like Jon, I also agree that the ball once again firmly resides in the possession of the major labels, and if they don't make more moves towards surround sound releases, our hobby could be on the decline once again, but at least it's not in decline now!