This whole argument is ridiculous. OP originally started by saying that "Fresh Start Servers" would not work because of {insert poorly constructed argument here}.

So what is gonna happen when they need to introduce new worlds because existing worlds are at capacity? Do you think we're going to stay at 10 servers indefinitely, just because SE doesn't want things to turn out the way that Azurymber thought they might back in that one thread? If the game becomes popular and successful, are we all going to run around with server lag so bad because we have 50,000 ppl logged in at one time? No, MMO's add new worlds/servers all the time.

FFXIV economy will always balance out, because the ability to gain money through leves and quests are a constant, and the rest of it is based on supply and demand.

The only thing that will cause the in-game economy to spiral out of control is Gil-sellers. That is the only potential problem here, not new servers.