I suppose it all depends upon a dealer’s customer base. I once ran into a high-end home theater installer in the Sacramento area who characterized his customers as simultaneously having the money for very expansive gear but poor listening skills/aural awareness. He apparently did quite well, financially, but expressed frustration that the gear was not really appreciated. It served mostly as "bling" to show off. I don’t recall which lines he carried.
Why a dealer would make a habit of poor synergy if attempting to sell to experienced audiophiles doesn’t make any sense to me. It seems self-defeating in the long run. But then, I’m neither a businessman nor someone who buys gear in dealer showrooms. As far as I’m concerned the only sensible pace to demo gear is in one’s own listening space.