Along with most people used all or a good chunk of their AF to beat Maat or their Job's version of Maat. What happens to the lone person who just started the game and wanted to level geo or run 1st? Not that I think anyone would go and do that, but if they did then they would have to do the 70 cap in mix n match gear. The 40-60 gear was the 1st addressing of what the jobs might need help with unless it was Smn af in which it didn't help in the two areas it needed. Then relic was to fix some of the short comings of the af and help the job even more for the 70-75. It's not even like it would be tooo big of a stretch for Geo or Run gear to appear in dynamis. There were a few characters who came from Adoulin or knew people from there. Maybe some Run or Geos came over on the down low.