Well, it went temporarily B2P because of how badly rushed and received 1.0 was, not the other way around. Sure there's the antecedent of FFXI never going F2P and DQX still being P2P, but there's also the antecedent of SE's all other F2P and freemium offerings and all other modern WoW clones/themepark MMOs like ARR that eventually went F2P, aside from WoW itself of course, so you never know.
