Another factor, at least for some touring bands recording their own shows, is the ease of use with DATs with no requirement to backup files and deal with them. Both Little Feat and the Radiators still master their shows from the SBD on DATs. All you have to do is make the tape, write the show date on the J-card, and drop it in a box. No late night transferring from flash cards to computer drives, no post work required at all at that point.
16bit is usually fine for most applicatons. A typical rock concert might have a dynamic range of 30-40 db max, and that is mosty with the crowd breaks factored in. If you looked at the dynamic range of a full song without the crowd break, you could see actual effective dynamic ranges no more than 20 db.
This is why DAT is just fine still for many users, IMO.