Basic problem, not too many individuals completely understand the concept and problems of Gc in relation to proper monitor settings and calibration.  It is just a hobby and they are perfectly content with whatever results they obtain.  Sure it would be easy for the vendors to include such Material Room shader setup for their customers, if they understand the necessity at all.  And that where lies the problem, the knowledge is not wide-spread and re-enforced.  I use PoserPro and I can totally disregard the need to Gc (well...not totally disregard).  The application does it for me.  But, just the same, I shouldn't be ignorant to the fact that Gc does not exist.  Nowadays, I find myself critically examining each piece of content installed into my software and wonder how I can improve the texture to a higher degree.  There are alternatives, and being much aware of such, we should not be afraid to alter the authors creation to suit our needs.  BB has been beating his head against a very dense wall to bring the Gc point to the masses.  And there are many more jumping in on the cause, myself included.  But let's be realistic, many artist posting their creations in the gallery have never, and will probably not, set foot into the forum to learn an extra thing or two.  Which is. IMO, a crying shame.