This is just silly.  Nothing's broken.  If something were broken, there are people around with the skills to fix it.  Fixing something that's broken is a different matter from rigging a figure from the ground up.  And the fact that there is no open source, widely available M4WM doesn't mean no one is capable of making one. 

If we're venturing into the realm of wild speculation, what if DAZ goes out of business?  That would hurt V4WM a lot more than any technical change.  Sure, those of us who already have her would be fine, but no new blood coming in would be fatal in the long run. There's risk involved with non-open source, too.