i don't understand where you people live. Near me people have left the trek craze and moved on to specialized. Your areas must not be all that trendy
But seriously i see a bunch of older 5200s and 5500s and such, but most things past 2005 seem to be specialized or something else.
The shops near me:
trek, fuji, scott
Specilized, Cervelo, Kuota, Cannondale, Raleigh
Felt, haro, Assorted BMX stuff
and one shop that is just giant
another that is just cannondale
maybe you should open your sampling to include a larger number of bike shops.
I always assumed some brands had required that you didn't sell other brands if you are an authorized retailer.
it seems that everyone sells haro BMX bikes because these don't compete with the big brands as much, But at the same time i almost never see 3 or more big names together in one shop.