I just saw this on another site. Seems the people that put on this show didn't want any of the venders to bring in or sell certain types of rifles so the venders, and there are some big ones are boycotting this huge outdoors show. This is a list of all the venders and celebrities that have pulled out.
http://mynortheastoutdoors.com/esos-boycott-supporters/
http://mynortheastoutdoors.com/esos-boycott-supporters/