FFXI has 200-300k+ players on what will be 16 world servers.
FFXIV has 70k on 18 servers.
Edited, Apr 10th 2011 5:15pm by preludes
It amuses me that some FFXIV fanboys can make the bold statement that FFXI is the game on life support. Ironically, we pay for our game and FFXI has nearly triple the player base of FFXIV. Meanwhile FFXIV is free and all their LS's are slowly dying and people are leaving in droves. Anyone who seriously believes that FFXIV will outlast FFXI before SE pulls the plug should seriously not have any children.
It baffles me that people are making these kind of 'fanboy' comments when both games are made by the same company and the success of one directly affects the other (prior to XIV's release they were intentionally making content more small-group friendly and slowly disregarding the rigerous rule-set that'd been in place for the previous 8 years to provide balance, such as the level cap. When it turned out XIV was a failure, they slowed down the pace of this sort of 'fun' advancement, and considered the realistic future of XI).
FFXI is 9 years old, it has an established fanbase. The difference between the two games is that XIV is intended to be the successor and it's a sure fact that SE would invest far more to bring it up to quality and become their new flagship MMO.
This is all without even considering the fact that XIV has been, and is being, developed on the money made from the XI cashcow.
So with that in mind, it doesn't take a genius to see that as long as they can bring XIV up to par and get a good PS3 release it'll certainly outlive XI. However it's all in a state of flux right now, we have no idea how things are going to turn out.
EDIT: Also, to add, it's entirely possible that the situation with XIV doesn't improve as quickly as hoped and they end up rebalancing the game properly for level 99. I think the one thing that's going to hurt FFXI at this point (sadly, I do enjoy it a lot still myself) is the recycled content. We're seeing a whole bunch of previously made stuff being balanced for higher levels now, and a few new bits along the way (personally I'm hoping that the Last Stand isn't just going to be a walk of echoes reskin, that would be really disappointing..). I guess too many resources being siphoned to 14 and PS2 limitations are going to eventually bleed the game dry of new content. Edited, Apr 11th 2011 10:52am by Dlaqev