People that buy the more costly pre/pro's are in most cases looking to get higher two channel quality to go with all the DD/DTS stuff. Everything is built to a price point, for the person who does not have a high quality two channel pre mixed in with his hometheater system a more expensive pre/pro may fill that need for him or her. If on the other hand, a person only cares about movies or has a two channel preamp in their system...Why waste money on something you don't need? The Outlaw and others you speak of were designed as great bang for buck units, if they had an audiophile preamp built in...they two would cost much more.
Dave
Dave