Probably because the couplers themselves are usually worth more than all of the bikes you see locked up. And a lot of new frames are aluminum, which don't work with S&S. But I know you were joking..
Originally Posted by Mr_Super_Socks
wow - this raises a devious possibility. if you had a number of s&s couplers and knew how to do the conversion (i.e. weld the couplers on), why not just cruise around with a hacksaw, and