@rocray You are indeed correct, that is the right way to be a successful sales person. BUT, for the sake of the discussion, what if someone called their audio dealer and said "I have a Humperdink Integrated" and I am interested in a pair of the "XYZ Amazing speakers". What if the Humperdink is a marginal amp? Sure there are ways to say it better or more elegantly but the last thing we would want a reputable dealer to do is sell the speakers to the customer when there is no hope of driving them appropriately with the amp.
Maybe some of the problem is the person who takes it personally that they are trying to match something to an ill advised previous purchase. Talk to enough audio dealers and they would likely admit that is the call the hate the most. "Make this work for me but I'm tying your hands behind your back because you must work with the weaknesses of the system the customer is inflexible with".
I've seen some of the dealers I do business with extend such a gracious amount of time to people they know will never purchase, listening to the stories of how perfectly they have put together their system. One dealer friend shared with me that the problem with hobbyists is that they think its a hobby for everyone involved...like the purpose of an audio shop is to be the local clubhouse for the hobbyist community. Sometimes they are and sometimes they are not.