Even a game that is failing or falling in the larger market might have success in localities, here and there. If the money spent to develop and market a game cost's more than the varying successes in some localities, its still a fail.
I know people who play and love GURPs. If those people are part of a minority of gamers, then SJG is still suffering, despite that fact of some local successes.
I think that's the point that Prosfilaes is making (don't know for sure).
My point really doesn't hinge upon the validity of his point though. Part of my point is considering the fact that within the past two years, I've seen D&D go from being the only game being played in this area to being one of many games being played -and by far not being the most common game played.
If I look at myself and my own anecdotal experience, I went from barely being aware there even were games other than D&D to it becoming my secondary choice of game. At first I thought this might have just been personal preference, and that I was the oddball in the area, but then I starting paying more attention to what was going on around me; the games being advertised at the local gaming store, and the games in the area recruiting.
On a larger scale that extends beyond this area, it might not be GURPS nor Rogue Trader nor any of the other games I mention, but it's my point that it is (IMO) more common to find other games openly played and referenced by actual name now. D&D used to be synonymous with RPG much in the same way that 'Coke' is synonymous with soda in some areas of the South, Xerox is occasionally synonymous with copy, and Frigidaire was at one time synonymous with refrigerator.
Naturally, as was the case with those brands, other brands would make names of their own and stand on their own feet. It is naturally for that to happen. However, I believe the other gaming companies have more rapidly closed the game and garnered more interest in the past 2-3 years than they have in the 30+ years prior.
The point growing out of that point is that I believe WoTC (going forward) needs to be more aware of how some of their choices are received and perceived by their fanbase. The reason being that their product is no longer viewed by many to be the only way to play. Where they may have faltered, others have been consistently getting better, and people have noticed.
Now, I would never suggest people only play one game. Even looking at myself, I do not. However, even if you are someone who plays multiple games, that still means there might be times when you choose one product over another. Again, if I look at myself; even though I still do play D&D, I realize that I have not purchased a D&D product since Manual of The Planes for 4th Edition.
Instead, when I drive to the local gaming store, I actually look at other options. I would have never done that before; D&D had a monopoly on my rpg book budget. As it stands -and I believe by talking to other gamers that I am not the only one- D&D/WoTC now have to work to convince me to buy their product instead of a product made by someone else.