According to the Guild Wars website there will be no monthly charge to North American players, how do you plan on updating the game with new content without having a steady stream of income?
Guild Wars is designed around a network of technology that is very efficient in terms of bandwidth and hardcore utilization. In addition to lower operating cost, The ArenaNet team believes that they can sell a lot more copies of Guild Wars by not charging a monthly fee. Not charging this fee allows larger communities of gamers to enjoy the online role playing game experience. The money earned from game sales will be turned right back to support the game and to develop the expansions which will be called chapters. The ArenaNet team is highly motivated to keep their customers happy and keep them coming back for more, if they’ve liked what they have experienced they will want to buy an expansion pack when it comes along. It was once believed that you could not offer a gaming network for free and remain financially successful, which Battle.net has proved wrong. A goal of ArenaNet is to prove that you can offer an excellent online game with full support without a monthly fee.