it's got to be something besides just sex selling.  because somehow that fact doesn't stop the photography gallery, the 3ds Max gallery, the C4D gallery and other galleries here from being more diverse than Poser's.  let alone how photography, pro 3d, and 2d art do in the wider web. 

you may be on to something with conforming clothes.  my boyfriend occasionally burst out laughing at how some clothes considered pretty high quality (and sold at premium prices) looked in my renders.  and there's a lot of stuff i started and stopped because of problems i couldn't do anything about.   from weirdly bent meshes, to floating lace tops, to stretched and distorted textures, to clothing that looks inflated, i've encountered several problems i either killed images or got rid of clothing to avoid.

i know a lot of people consider dynamic clothes more time consuming to work with, but i honestly find them much less so.  i've spent hours trying to paint corrections to conforming clothes, only to have results that were mediocre at best.  on the other hand, any corrections i've had to make to dynamic clothes have been fairly quick and easy to do.