The relationship between crafters and gatherers rely a lot on the idea of "helping each other out". Right now gatherers dont need crafters' help. They don't just "give favors" to crafters. Crafters either pay them in cash, or do them some other "favors" like supplying glamor gear.
Right now, the gil flow is pretty one-sided.... only from crafters to gatherers... And crafters are just making lower level crafters' money by selling everything below 2 star.