Could please provide sources there are more 6.8 ammo and brass available then PRC? Are you saying all of PRC, or 7 PRC? Quick search shows more 6.5 PRC factory ammo not including brass all over, Win is the only one making 6.8 Western in quantities. I think there are 2x 6.8 Western brass manufactures, Winchester being the main one. I don't follow it, could be wrong.
Point being is when Lapua, Peterson, ADG, and Norma pick up your cartridge, it is not going anywhere not to mention the amount of factory chambering across the board. Both Winchester and Browning chamber Hornady's most popular offerings.
I'm not a Hornady guy, I do have a 375 Ruger but their marketing is something else. Be nice if they applied the marketing to the 280 AI