There might be many reason to buy gil, they might buy gil so they can Show Off how good their gear is to other people, they might buy gil so they can ruin other people chance of gettting item, they might just be pure evil and just wanna drive up the price.
And how do you know Gil Seller don't give a shit about this game? Some gil seller might actually be actual player who have too much gil than he needed, or maybe he want to make some money off the character he pay money for.
And you know what, if we eliminate all the gil buyer, all the demand, shift the demand curve in the Supply vs Demand graph to the floor. AS in eliminate everyone who would buy gil at any price. you know, not everyone is like you, most ppl don't buy gil, not because they can't afford it, but because they don't wanted to. it injured their pride, i won't be proud of my ranger if i had to buy gil to support it, and you know what, i can sure as hell buy gil, my dad just make me a credit card that have 100,000 Thai Bath Limit, thats translate to about $2500. i can use a few million gil for my ranger and summoner, but i won't buy gil, even if its $1 per 1 Billion, cos that not the way i want to play my game.
I wish there is no more gil buyer, including the current people who don't buy gil but would buy when the price decrease. If you have a desire to buy gil, at whatever price at all, you are counted in the demand side of the RMT, that juts basic economic...