There is a significant difference between using themes and genre concepts and wholesale copy pasting. As Flight pointed out, a shit load of mechanics and names got directly lifted from Sojourn MUD and a bunch from Toril, too. Hell, verant guys were actively recruiting both staff and customers from within those MUDS. Brad's sole rainman moment was having the balls to go with required 3d graphics cards for the game, which at the time was mind blowing in its risk since 3d cards were just emerging on to the scene. Certainly, the MUD community was big on trading ideas, but it was also not a for profit industry. EQ essentially took a bunch of that community work and turned it into a cash cow, which definitely pissed off a lot of the admins on Sojourn, but as Flight pointed out Sony more or less made that issue go away.