Not to sound like a sentimental, goes-against-reason 61 year old who's just returned to cycling... but I felt put-off when I visited a local bike shop. It was more like a hip grocery store or a theater lobby. Not much merchandise in any depth, but lotsa lights and 18 year olds who'd never heard of SunTour, not to mention the floor saturated with Specialized bikes almost exclusively. No used bikes, nothing hanging from the rafters (no rafters), no fishbowl with Benotto tape, etc. Most importantly, they couldn't replace my square taper bb. I'm leery of a cycle shop that has no variety and little replacement parts depth on the back shelf.
Market place hard realities in a kind of on-a-shoe-string business? Yes, I understand the difficulties. But cycling happens as much in your head as in your legs. I eventually found the kind of "pro" LBS I was looking for and got my part-- but I had to travel a ways to get there.

Maynard Herschon, does anyone remember him?, would have far better described such an olde bike shoppe.

As far as the idea that Specialized or Trek have the right to dominate the shop because of their marketing power.......well, surelk-- except we're the losers because our breadth of choice is narrowed. (As in, "Any color you want as long as its black").