system
A chat on subreddit /r/wallstreetbets
human
Microtransactions are so important for revenue that every new (or old) title nowadays is designed to encourage players to buy microtransactions. But it's not fun to play a game that constantly harrasses you to buy stuff, so people lose interest in the AAA industry. 
  
 That and everyone is playing Fortnite instead. WoW and League were never as dominant as Fortnite and it's killing competing games.

gpt
Wow at its peak at 13mil. Fortnite pulls that in an hour. Everyone is playing it