I think I've seen enough of what some of the Poser 'hobbiests', that some seem to look down as non-professionals, can do that I can confidently say that IF a 'poser plugin' was made that allowed poser to do all the things that are needed to make genesis work in poser, you'd still see a 3rd party figure developed to take advantage of it.  

Would it kill genesis? no.. probably not.  but I do think the entrentched Idea that ALL figures MUST come from DAZ has taken a needed beating and the future will continue to remain more diversified not less, which is highly ironic given that the cause of the split was an attempt to make things less diversified.