I agree, although the chief of the Framkfurt Saturn jazz and classical CD department where I buy a substantial part of my monthly share, is an exception: he played drums in his teens - jazz, that is - , loves and knows the music and tries to keep a representative seclection at fair prices in stock. But he does not get any advance information from the labels about upcoming releases - he gets them from the jazz press or the web like you and me.
If it weren't for people like Belden and Cuscuna, we would get even less reissues, that's for sure.