With Eve gone, only sub based MMOs left are FFXIV and WoW

[Silvarion]

Usually MMORPGs goes F2P because investors wants their money back ASAP, and F2P offers a fast initial income, but after that it always goes down til the game just dies.

So even if ffxiv would make less profit they still can release content to gain subs back meanwhile f2p games don't have the ability to do that unless cash shop gives enough profit countless of f2p games were dead after a short time due that.

Lineage II (2003), Everquest II (2004), Dungeons & Dragons (2006), Lords of the Ring (2007), Aion (2008), Star Trek (2010), Star Wars TOR (2011), and the list goes one are still alive and well after so many years being F2P games.