> To be fair, it comes with your World of Warcraft retail subscription, and you don't have to purchase the original game again nor the latest retail expansion (Battle for Azeroth) to play it.

Seems to me like Classic is aimed at players who aren't currently subscribed, who aren't served by the current modern WoW. You know, different demographics and stuff. I know I'm not subscribed, but I'm considering resubbing just for Classic, and I've seen plenty of people in the same position.