Mark, I wouldn't blame the dealers (yes some of them are unable to setup a system, but most started this business out of passion and it shows in their way of doing business).
No, the blame lays on the manufacturers, with some of them using deceptive specs and inflated prices to sell their ware: how would you call a sports car advertised as 350HP but only outputting 80, or a luxury watch touted as having an in-house movement running at 36,000BPH that proves to have a cheap Chinese movement with a lowly 18,000? I think these would be called scams and the National Bureau for Customer Protection (or whatever it's called in each country) would step in fast'n'furious. Now should I name names of High-End Audio products that are as overrated as the car/watch I mentioned, but nobody gives a damn about it? I know I could (and so could you, as a dealer), but this would be useless since such pieces of poor engineering get regular prize in S'phile and their ilk.
Some of my friends are audio dealers and I know enough horror stories about lack of basic QC, poor after-sales service and products that the manufacturers insist upon even if they are not salable (and for good reasons). BTW, have you ever changed the plug on an AC cord? I did, and what I discovered when removing the factory-installed cord made me gush... and I am talking about four digits prices, not some entry-level Radio Shack wires.
So to sum it up, you cannot attract young and affluent customers since most of them are also highly educated, have full access to the Internet and (as such) reject snake oil for what it is: pure BS!