You are correct about the time issue....but another aspect of this is that we are not allowed to set up the guitars (At our store anyway - I've heard of others GC's having a tech there...)
I work in ProAudio, but know 1000's of times more about the Guitars and amps than the Guitar Sales guys do...they're always coming back and having me go up and "Adjust" a guitar for a customer who has purchased a guitar from them but is now having some issues with it.
I used to hear a lot of GC bashing,....and actually did a bunch of it myself over the years,...but I have to admit that the majority of the empoyee's that work at our store (Fairview Heights IL ) are very knowledgeble in each of their departments .... it's just good to know that our store is really a top notch music store with Excellent personel as well as good prices
Rick