I really don't know how many people make their own stuff.  I know that I've made things I couldn't find a few times, and used things I found that I could have just as easily made.  I suppose the common wisdom is that people who make their own stuff do it in other programs, only working in Poser or Studio if they're in the content biz.  I have a hard time believing there aren't at least a few Poser users who model everything themselves and neither buy, sell, or share content.  If I can ever find the time to get the hang of zBrush, maybe I'll be in that category someday.  If Truespace, blender or Studio don't lure me away, and I'm not expecting anything to change in that area any time soon.

For being supposed entry level programs, it's especially hard to make your own stuff in Poser or Studio, IMHO.  Everyone seems to use a handful of smaller tools in addition to or even instead of the provided rigging tools.  What does that point to?