Except we're forgetting that RMT and botting will still exist, meaning easily obtained gil in large amounts will still exist for the ones willing to risk their accounts or the companies that deal with RMT. If they chose they could still sell gil on their site, in a model close to this:
10$ = game time item = for example, 1mil gil ( if 1mil would be the average price of such item on a server)
RMT company takes notice and adjusts their prices resulting in:
10$ = 2mil gil on a RMT site
SE can only do as much to prevent/ban/terminate RMT or botting accounts. They can't exterminate them completely, and I'm sure that the RMT companies are financially doing just fine not to be upset if they lose 10, or even 50, accounts.
I'm just not sure why people claim, or fail to see, that introducing real money 'advantages' (as in, I can earn gil without actually playing the game for more than 30 minutes) has no long term impact on the game's economy. Just makes me go Jackie Chen face. Furthermore, why they refuse to acknowledge that it is an advantage.
As it is, we're all of different economic status right now => we all play the same game, the same way (not talking about those players that opt to take the illegal route paying for RMT gil).
If game time items are introduced => our economic status allows some to bypass the gil-grind, though true enough, allows people who can't pay for the game with real life money, to still play it.
To be honest, if you can't afford to pay for subscriptions, then you can't play. If you can't afford a decent computer to run the game on, then you can't play. If your real life is crammed with changing jobs, moving to other country, loosing the roof on your house etc. then you can't play.
Tough cookie, but FF XIV will not suffer, as people are leaving and coming back to any MMO constantly.
I'd rather if SE offered deals like 3 months worth of crysta (game time) purchased = get 1 month for free, or something along those lines. Cheaper crysta prices during big holidays or whatever.