This might be a bit off topic, but I'm led to believe that Kyocera-Contax was predominantly targetting the market of high-end amateurs with money, and so is the current Cosina-Voigtlander. If a pro can use a Bessa R series camera for his/her consistant work in the field, that will prove that I'm wrong, and I will be happy to.
It probably has to do with its primary interest and the bottom-line capacity. Nikon was a company making glass for the Japanese military during WW2. Canon has had its camera(s) approved by the U.S. Navy for its use. Leica has always been in the battle field. Old Contax was, but I doubt the Kyocera-Contax was ever meant to be so. And Cosina-Voigtlander and Cosina-Zeiss seem to be the same as the Kyocera-Contax.