My main point was that RMT are ruthless in that they do not care about the legitimate player base in that they would without hesitation resort to MPKing, 3rd party hacks, bots, market flooding/crashing/killing, etc.
If they were to be eliminated entirely the market would have time to settle and be 100% player based instead of 75% RMT based like it was years ago. Once the market settled to how it was intended to be, SE can project how much the value of gil truly is similar to the updates changing the costs of Dynamis, Limbus, etc.