The subreddit system makes this incrementally more doable for aggrieved subreddits: they have a better shot of uprooting enough of just their little community a

The subreddit system makes this incrementally more doable for aggrieved subreddits: they have a better shot of uprooting enough of just their little community and convincing them to move. There's a decent number of users in those smaller subs that don't really have a wide membership in others so moving is more reasonable for them. But this: a) is only a little easier, it's still really hard to move even a tight-knit and smaller community like that, and b) really doesn't apply at all for third-party client developers, whose users surely use and belong to a wide spread of the subreddits, so the task for them is more like "replicate Reddit overnight."