2) Those who have found their edition already
That's me right there. It's not that I haven't looked into 5e, but it seems to be mostly for people who found 4e to be a move
away from what they wanted. That's not me; 4e is pretty much my holy land. It's not perfect, to be sure, but it's as close as any system has ever gotten to what
I, specifically and subjectively, want out of D&D. I'd have been interested if 5e was a refined 4e, but it seems to be more of a renaissance AD&D? Which is perfect for some folks, and that's great, but I have no fondness for AD&D. It's where I started, but it was never my home.
As for the rest of my regular group - one is of the same mind as me, one still plays 3.5e with another group but has no interest in 5e, and the other two are mostly system-ambivalent - they'd play/run 5e if that's what the group wanted, but wouldn't bother pushing for it.
Of the other friends I have who play(ed) - two moved away and don't have a group right now, but they are super into crunchy mechanics, tactical combat and MMO gameplay, so I doubt they would choose 5e over 4e. Another five or six play with my player who prefers 3.5e, and they play mostly 3.x/OGL d20 systems (3.5, d20 Modern, d20 Past, etc). They seem like they might enjoy 5e, as their main reason for not playing 4e is that it's too much game and not enough novel. However, they're also not particularly into learning new systems - they're much more interested in rules-light storyteller affairs - so I suspect they're just comfortable with the 3.x family's familiarity and feel no need to change.