We're wavering a touch off track here

.
The point isn't how valuable we individually thing player run companies would be, nor how they compare to a new battle system, nor how similar or different they are to guilds in other games.
The point and question is just this: 'Will player run companies ever exist?'
It was heavily hinted (IE: with a sledgehammer) that they would, now the Grand Companies imply almost as heavily that they won't. We just want to know if they're still even a consideration at any point in FFXIV's future, or if Linkshell's are all we'll ever get.
Of course, aside from that, let's go ahead and debate them

. Just try not to derail it so far the dev's miss any value.
Personally, from the games I've played, Linkshell's are the most like chatrooms of any guild in any MMO, quite possibly excluding the slew of F2P games. They lack quite a bit that has to be supplemented by the players themselves in very roundabout ways. These, rather needed, improvements don't have to come now, especially as there's quite a lot on SE's plate here, but they 'should' happen in some form. The proposed mail system they've mentioned should help a bit, so long as items can be mailed, but that's still just a stop gap.
But in the end, if we don't get them, we don't. It'll be just like XI, handling practically all LS affairs outside of the game entirely. Can be done though, clearly

.
Just tell us: will we, or won't we?