In themepark mmos since there is no real marketable economy that evolves around the players, the community is not really needed. I remember back when I used to play FFIX in 2003, after I elevated my character to master level crafter (which was having your primary craft skill above 95 and all secondary crafts maxed at 60) I met many players who probably heard of me from previous customers or reading general chat, asking me to craft them specialty items such as high quality high end weapons and armor. For me this provided me with a great sense of pride and happiness as I was able to not only help my friends but the entire community as well!
I don't know about you guys but for those who played FFXI it certainly felt that the community was amazing by today's MMO community standards. I think a huge factor was because in FFXI the community was more of a hunter gather type of a community. Players had to literally work together to progress their characters from level 10-65 and also the market economy was primarily player driven. Crafters and farmers created the supply for gear and demand was driven by the lack of a quest or loot drop system. Therefore, both adventures and crafters had to work together in providing each other with needs that enhanced their gameplay and the community.