Keep in mind that no vendor has the obligation to create for Poser and DAZ Studio, Firefly and Superfly, 3DL and Iray. As has been stated, it's a LOT of work to cover all bases.
Some may have started with one program and developed a customer base, and at some point then try the other program and find it easier and/or more profitable to create in, or don't feel they can do both.
While it's understandable to be disappointed when/if that happens, it may be a choice they feel the have to make to keep creating products at all.
Some may have started with one program and developed a customer base, and at some point then try the other program and find it easier and/or more profitable to create in, or don't feel they can do both.
While it's understandable to be disappointed when/if that happens, it may be a choice they feel the have to make to keep creating products at all.