As someone who has derived great value from many of the 'non-tech' Stack Exchange sites, I dispute your claim that these sites have "bombed!" Many of them are

As someone who has derived great value from many of the 'non-tech' Stack Exchange sites, I dispute your claim that these sites have "bombed!" Many of them are not (yet) household names like SO is around here, but they have thriving communities and provide real value, answering real questions, and providing legacy content that will be of use to people for decades to come.