There is a crafting quest right in Ul'Dah. It calls for one mythril ring and gives 40K exp. If you have a HQ ring that makes 80K exp for one ring (100% bonus for HQ). You can buy a full inventory of them or have someone craft them for you to turn in. Repeat this a couple dozen times and go from level 40-50 in one evening. Everyone and their cousin can easy get a craft to 50 and then mass produce the top level items.

If it is so easy to become a level 50 crafter, anything that is worth selling will soon be flooded with competition and profits go extremely low. I've noticed the housing prices being unequal over servers - I can't even imagine how any new FC or group of people can begin to fathom making enough for a house on a standard server - much less the outrageous prices on a legacy server. I don't know how any FC can hope to have a house unless they recruit a couple hundred members just to afford a housing.