As with so many things in life, it usually turns out there's a reason why something is given away. Half of my garage is full of unused things in that category. A few hundred MB of my runtime, too, now that I think about it.

At least with DS4 there's a motivation to give it away other than "nobody's buying it." They want more people to try Genesis and buy Genesis products, for which the Daz store happens to be the main source. With Bryce and Hexagon it's probably more about "nobody's buying it."