A bit late but I need to answer this: Because several of those coherent, focused and modularised libraries get un-maintained after a couple of years. Then your

A bit late but I need to answer this: Because several of those coherent, focused and modularised libraries get un-maintained after a couple of years. Then your team needs to make another selection for many coherent, focused and modularized libraries. I suppose some developers enjoy doing this again and again. Many don't.