It seems like the concept of courtesy on need/greed has changed with the generations. The older generation of MMO players (EQ/Vanilla WoW players) all look from the point of view of "The person running the specific role for a run gets first pick. Anyone else comes last". So healers got healer gear, DPS got DPS gear, etc.

The current generation of MMO players look at it differently. "Anyone who can use or wants an item deserves NEED, regardless of current role, spec or class". This isn't unique to Final Fantasy; Wildstar has the same thing going on. DPS players need constantly on healer/tank gear, tanks/healers need on DPS gear, and anyone who questions it gets destroyed on the forums by a vast majority of repliers. The number of people actually supporting the idea of "Role first" rolling seems to be dwindling.