From 2002:

"In a large scale online game however where the players are mainly walking or chatting, and the game world is split into several zones, much more players - several 1000 - can be handled."

IF GS networking is single server,
AND a single server can only hand 50 people,
AND a single server is a single zone,
THEN how can "serveral 1000" players be handled in a MMOG fashion?