If you look through the vue department, you will find that a lot of the "vue" content is poser content, which will import into vue.  By that definition, pretty much all DAZ content (and poser as well) could be cross referenced in the Carrara department.  I think people don't bother because most Carrara users know they can use such content and don't need to find it in a separate department.

From my perspective there is a chicken and egg problem as well.  Some Carrara only content is priced pretty high, no doubt due to the low volume.  But the high prices result in continued low volume of sales, so there seems to be a non-virtuous cycle underway.

Klebnor

Lotus 123 ~ S-Render ~ OS/2 WARP ~ IBM 8088 / 4.77 Mhz ~ Hercules Ultima graphics, Hitachi 10 MB HDD, 64K RAM, 12 in diagonal CRT Monitor (16 colors / 60 Hz refresh rate), 240 Watt PS, Dual 1.44 MB Floppies, 2 button mouse input device.  Beige horizontal case.  I don't display my unit.