This is what I believe to be a more apt example of ninja looting (vs. loot 'n leave). Say someone does a PF for a Moogle Weapon grind cause fast easy fun relics to use on relic quest, and the rules in PF say each person can claim one weapon for greed for an alt class approaching lvk 50. Monk joins third, says he wants DRG weapon. A Dragoon joins last, agrees to rules and says they want the Bow cause it's not spoken for.
This type of party, based on preexisting arrangements in PF everyone should pass what's not their 1 greedable, So example above, DRG weapon drops and Monk is like 'Yay the one reserved for me"'. And Monk greeds it while everyone passes it and it should ne theirs but the DRG who had reserved somethint else breaks the deal and rolls Need, gets the weapon for themselves, and leaves hacing broken their deal.