I still say that there's no such thing as "one size fits all" figure.
As I mentioned above (which was ignored by everyone but Pengy), sure you can morph the bejeezus out of any mesh and make it anything else if you have enough geometry.

But if you take what started out as a medium-build male figure and try to make it a teenage girl, an ogre, Hulk Hogan, or an opossum, while you may be able to physically morph the geometry, you're going to run into serious problems with the textures and the joints.

And while you can (and probably would want to) make new textures for each figure morph, you're not changing the UVs any by doing that, and that is the only way to avoid texture distortion. Same with the joints - Your Hulk Hogan is going to have different bending requirements than your teenage girl, and all that extreme morphing is going to change the mesh topology/topography in a way that simply will not work equally well for both variations.
So your Apollo-As-Teenage Girl suddenly requires remapping and re-rigging. What was supposed to be a simple matter has suddenly become more complex than creating a whole new figure.

This is why animation and game studios create new figures, or alter their existing figures significantly to suit their current CA needs. You can bet they would love to do it if they could get away with it, as it would save a lot of time.
But "One size fits all" seems to be a uniquely Poserverse idea, and it doesn't work for extremes. It's not a conspiracy that there are so many figures, it's a necessity to more optimally suit the needs of the people. And it makes sense. Trying to use one figure for everything is going to lead to major problems for the person trying to do it.