I've had a much different experience with shops here.
Here is the real problem, consumers come in without knowing what they want. The same is true when trying to purchase a car. One cannot expect a shop to mind read, but they can ask questions then leave you alone to decide what you want to do.
There is also the issue with "tire kickers" who never buy because they really cannot afford the item in the first place. What are they doing shopping. I'd say if more people started to respect these business they would get the respect they need to make a purchase. These shop do not owe you something. They are running a business that requires they make a profit.