This is a bad faith argument. Classic and Retail are two different games at this point. Sure Classic sub is included with retail sub but I paid my dues via a Dark Portal pass, Northrend Explorer pass, and ~15+ years of a subscription. A better question would be why is Blizzard treating them as the same game. It is perfectly fine for me to play Diablo 3 and Retail WoW at the same time or Hearthstone and Retail. My progress on Classic effects my Retail account as much as my progress on Diablo 3 does. We understand that we cannot have multiple access keys to the same server with one account but why are classic and retail still considered to be the same server?