For years, EAW and OP coexisted. But as the number of players decreased for both games, OP held on to more people, and eventually EAW had no multiplayer activity.
EAW is an excellent game. But it can only divide an already tiny player base...the same with the so-called Community Edition of SFC2. Dynaverse can sell whatever it wants, of course, but the offerings of EAW and CE are practically useless for multiplayer.
Anyways, for $12 you can get EAW for singleplayer (and to develop cloak fundamentals) and OP for online play (and a more powerful cloak and tougher ISC).