It isn't like that at all. Leica DOES sell cameras with the black dot, so selling the dot to Leica owners is no different than a Toyota being made in versions with a silver logo or a gold logo. Go to the parts department at any Toyota dealer and they'll gladly sell you any of the logos used on Toyota cars; they don't even care if you actually own the car it originally came on, so long as you have money in hand to trade for the logo.