"Actually many of the genesis "features" were already available in poser figures before."

I don't think that people really understand the difference.

It is not that V5/M5 are beautiful character even if they are, It isn't because of excellent weight mapping even if it is, it isn't about subdivision that open up a the whole game market. It is not because is much easier to make conforming clothing (anyone can do it). It is because you as a vendor only have to create one set of cloth for a whole range of characters. And all V4/M4 characters can very easily be used, not only on Genesis base figure but all the derived characters from it.

There you have a powerful concept.