DSON is only an addon because Smith Micro refused to build in native Genesis support into Poser despite being offered assistance...

DAZ3D created DSON so Poser users were not being left in the dark by Smith Micro's refusal to help keep Poser up to date with modern content

Poser users are not left in the dark at all by folks like Hivewire.  Only DAZ.  Hmmmmm, one has to wonder why DAZ thinks it's can dictate anything to Poser or anyone else?

Well maybe because it's the largest content provider in this market segment by a LOOONNNG margin. Rendo, runtimedna and Hivewire altogether still fall short...

And SM considered that and said "No thanks."  As did all the other providers who use to be able to use DS content. We Poser users have moved on.  Maybe it's time for DAZ to do the same.