The good ones certainly don't. But I've seen quite a bit of sniveling and crying in local forums by shop mechanics and a few owners about how "folks like us" are killing them by not "supporting the local LBS." I've been told straight-up that I should have ordered a dyno-hub from them rather than paying 1/3 the price (and getting it the next day) from Amazon. Srsly? I don't feel I "owe" anyone anything and when folks feel that I do "owe" them something for just existing I get a bit bent out of shape.

Maybe things are different here in Chicago where there is a bike shop for every square mile of the city (if not more.)