I mean, MMOs were supposed to be continuously supported and developed during the enrollment period. Earlier iterations of the model had live DMs running encounters, active continuous releases to expand the game world and advance the storyline, and robust customer support to address the bugs and defects. Also, just maintaining the servers necessary to support that much data processing was hella-expensive on its face.

Games as a service don’t need to be a scam.

But eventually, the studios figured out they can do the MMO business model on any game. Justifying a fee for Everquest was a lot more reasonable than justifying it for a glorified Team Fortress knock off. Or a freaking platformer.