[Matthias247]

I'm not into Ember and have no clue how it compares to the other SPA frameworks. But from these political point of view it doesn't look worse than the others. React and Angular might die or change in an unsuitable way even sooner since they are driven by other big companies for their own merits. Maybe extjs or aurelia might be different, since they are maintained by companies which earn their money through this.

The good thing is that if a company is as big as LinkedIn they could probably maintain the framework on their own if it gets out of favor. Of course they could also directly start a new one for their internal use, but it's questionable if this would get any better than the existing ones.