I didn't much care for Stephanie 3 (her head is weird and too big), so I don't really care if I miss out on version 4 because I'm a Poser user.

I've spent thousands of dollars on Poser and items to use in it.  I'm not about to switch to another program that has an interface that I find alien, and where the majority of my content doesn't work.

And I can't see a huge number of content creators continuing to support Poser 5, 6, 7, 8, 9 Pro 2010 and 2012 and Daz|Studio.  Content creation sales isn't exactly the most lucrative job and unless you are selling your models I doubt very much that many make enough to support themselves or their family.

So I don't see a problem. Let Daz shoot themselves in the foot by going exclusive to their own program. It won't last very long because they will eventually see that a good percentage of their profits came from Poser users.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi