Sorry, you just haven't made the case. In the OP, it's postulated that you can:
Make 3000gill on leves per pay
Make ~350 per dungeon run
Make 100gill per fate
You will need to spend 1k max per dungeon on repairs.
Raids are capped at 90 min, so they are the same as dungeons.
That's 4.6 dungeon or raids per day to break even. That's 7 hours of dungeons per day to break even. No deflation until you and everyone else on the server exceeds this. Assuming you are doing fates. Plus whatever other dailies they add. It really isn't an issue.