I think the obvious reason for Backbone and larger teams is that larger teams are more likely to be working on projects that have been around "a while" (being d

I think the obvious reason for Backbone and larger teams is that larger teams are more likely to be working on projects that have been around "a while" (being defined as say, more than a year). A year ago, Backbone was clearly a more popular choice. I didn't see anything in the article that corrected for that.