[robmcm]

"My guess is that they aren't popular at all because they have the notion of being enterprisey"

You have to wait a while before the JS community realise that enterprisey is just the inevitable end game of their wheel re-inventing.

In the same way they dismiss things they don't understand now due to complexity, they are adding more and more with all these frameworks and architectures.

Nothings new, everythings a remix. I imagine rules engines will be the next "revolution" on this already well trodden road.