[StevePerkins]

I think it's more about corporate sponsorship and branding.

Angular is seen as "The Google Solution" (disregarding that Google doesn't actually use it as much as people think). React is seen as "The Facebook Solution". Ember is more decentralized, and lacking a strong primary champion/sponsor. Something that developers SAY we like in open source projects, but which frankly doesn't really match our actions so much.

I chuckled a bit at the parent comment, but I won't say that logos don't matter to front-end developers (half of the HN discussion threads about a link seem to be about its font and CSS choices rather than its substantive content). But that's only a slice of what I think is the overall reason. Ember just doesn't have strong corporate brand muscle behind it.

[nojvek]

Sure that has some value, but Angular and React brought in new ideas for their time.

I think the react 'view as a function of state' makes a ton of things easier to reason about, and will probably last for a while.