Hey, I've got a link to the Skyrim sales numbers. Check this out. The results are from December of last year, and I really doubt that it has changed that much:
http://www.statistic...s-v-statistics/
If you don't want to click on the link, here's the break down:
XBox 360: 59 %
Playstation 3: 27 %
PC: 14 %
That number comes to 86% of Skyrim's sales coming from console gamers. For now, unless Sony and MS change their minds about allowing users file access (which is how you can mod,) modding only benefits a small percentage of the community. That is the reality no matter how you slice it.
It doesn't matter how many mods are out there, the sales numbers don't lie. You're free to look up the DA numbers as well, but I don't think it'll be too much different from Skyrim's numbers. Since Skyrim is known for having so many mods, you'd figure that there would be more PC purchases. That goes to show while mods are a nice thing (which I do enjoy as well,) they are only good for a few. It also appears that many don't care if they can mod a game or not. There has been 20m copies of Skyrim sold, with only ~14% coming from PC users.