In WoW, gold is almost entirely removed from player interaction. You get it primarily from the game itself (quests, NPC sales, farming) and spend it primarily at NPCs (repair costs, mounts, consumables). There is an AH and people do use it, but anything good in the game is bound to your character after picking it up and there really isn't much of an economy to speak of.
This really doesn't make sense. You can't buy any consumables reliably from vendors. If you want potions, flasks, gems, enchants, and food you need to get them from a player. There are a number of rare drop equipable items that are pretty good and valuable, but aside from the raid drops that do not bind, these drops are decentralized and cannot be efficiently farmed. You may not interact directly with that player, but you're purchasing his/her consumables off the auction house at a price that the market determines. The only NPC purchases that you make are skills, repairs, and the basic fluff. Any special mounts need to be acquired through quests, and/or drops off of certain monsters.
The problem with the way FFXI was doing equipment (my lower level experience) is that the gear prices in the shops were exponential. Level 1 might cost 100 gil, level 5 1000 gil, level 10 10,000 gil, level 15 25,000 gil etc... With this trend in order to keep up, you need income from the game to match this. This simply was not possible. Player A that bought his weapon for 25k gil is going to try to sell his weapon for 25k gil - maybe more if the item is limited, but certainly no less than what the item would vendor back to the NPC for. That is the problem. If the base price of these weapons are lower, it makes things more affordable, and it means that this rare drop from Super Monster Flex that is semi-desirable, will be worth relative to the amount of them present in the world exclusively, and not relative to the fact that it vendors for 15k.
If people talk about RMT/Gil Sellers/Gold Farmers ruining the game, then there really needs to be some community acceptance on one key factor. Don't buy gil, don't group with people that do, and Square has to commit personnel to reviewing large-scale currency transactions and terminating accounts that buy AND/OR sell. Edited, Apr 13th 2010 5:21pm by desmar
WoW Blackhand-US-Date of Retirement: 9/21/2010... /Sigh
Devari - 90 Rogue 85 DK Druid/Mage/Warrior 70+
FFXI - Shiva "Retired.... Or not? One more try, honest."
Desmar - 65 Sam 36 Mnk 18 Thf 12 War
FFXIV - Devari Garamond - Sargatanas 50 Paladin / Culinarian / Weaver / Armorer
Beta - Devaria Ariadne - Ultros - Pugilist