How come nobody looked at this list and said, "Holy shit, why do need 6 templating libraries?", or "Why is it we have 6 libraries that are build tools?"

At some point I would've thought some of these would get consolidated, but instead all we have is more and more and more libraries popping up. Instead of just building in features, we're just simply building new libraries to address some need a developer had which wasn't in an existing library.

I'm all for an awesome set of tools, but at some point, shouldn't we really think about combining some of these and just build one or two tools with all the features a developer needs?