Consider this, one of the biggest games in Japan is Monster Hunter. It's a game where the object is to hunt monsters, you hunt monsters, steal their bones and hides and teeth to make better gear to fight harder monsters. That's all the game pretty much is (and mining, and cooking food), gathering resources to continue playing the game to gather better resources.

This game is more, log in, cap poetics, run wod/coil, or, if you got your gear, wait for the next patch to make all the gear you spent 3 months getting obsolete. Repeat. XI, you could pick up gear at low levels that would last you till 75, at 75 you had different progression routes to gear up, Sea, Sky, Dynamis, HNM, BCNM, Nyzul, Salvage etc. etc. XIV is pretty much devoid of any meaningful content, you're on a giant roundabout and oh look, it's about to start again.

Also with XI, you had gear swapping, as RDM you had a full inventory of gear for swapping to INT or MND depending on the spell you wanted to use, the game wasn't challenging by any means, but when you had to gear up for (as DPS) a TP build and a WS build, just having Item X for slot A isn't enough, you needed item X, Y and Z for slot A. This games pretty much build for the Facebook Games generation.