Truth is, there's never been a huge demand for these things.
No, Not quite True. The low and mid level Live sound & Worship market has exploded with digital mixers of the last 3-years as reliability for digital mixers has been verified and the small footprint size, ease of setup, as well as cost vs feature ratio brings real perceived value even thou the A/D & D/A & Effects are still rather crappy for the all in one product.
At the Pro Live Sound level all the major players (AVID, Soundcraft, SSL, DigiCo, Yamaha to name a few) are doing very well with new improved Console mixer models every few years. For major touring acts, it's pretty rare to find an act using an Analog console anymore.