There's no money in Poser content because the markets are flooded with super quality items for dirt cheap. Too many promotional give aways. The future market is unclear too because of new programs with added features.
 
Honestly, my opinion here for what it's worth. Do something not everybodys doing with let's say Poser 6 or 7 in the material room. Figure out how to make nodes for a figures skin say for an example; so that it has color and depth when rendered. Create products based on the newer features using techiques the old programs can't use. As far as models-there is many pro's out there to even try to compete, but some of them don't know how to use the material room of P6 and 7as good as they need too now. Then you can couple that knowledge with surfacing for your models and do textures with nodes that make everyone green with envy except your model when it's rendered.  Green or gray that is.

Making quality sexy stuff for the girls is tuff too. Lots of competition in that area and also it feeds the guy markets who like playing with the sexy dolls and then there's girls who wish they looked as good but maybe don't but they can pretend in Poser. This must be the reason and can only be why there are no resources for the men models. The poser girls would rather look at themselves(female figures) then make sexy men characters and clothing. I think there are more women using poser than men actually, yet few resources for men. So why such a large market for sexy chick stuff? Because the ladies like it too! Just an observation. :)