Canon, Nicca, and other Japanese companies of the late 1950s were "the new Leica", with their innovations such as metal shutter curtains, automatic parallax adjusting external finders, rear film doors, etc. Japanese companies continued to innovate, dropping the rangefinder in favor of SLRs, and quickly decimated the German camera market. Leica has hung on for 50 years since by making the same type of camera bodies, out of heavy metal, and let's people pay 10 times as much because "nothing feels like a Leica."
On the Sony, sorry, an electrics black box from a company that makes everything from crock pots to stereos is not the same thing.