Haha, really I think that stores treat people differently based on the natural temperment of the people who work there rather than the company itself and their targeted customer. When I was around 16 I walked into one of the stores on Bloor street in Toronto, can't remember who it was but they had jeans that sold for over $600, and I recognized the name as some power brand like YSL. I was scared to walk in but curious, and I've never been treated so nicely before in my life. I was so impressed. Walking through Holt Renfrew though sometimes I get followed, but I can sometimes get followed walking through a regular store with items I can actually buy.
So since people seem to have very different experiences in stores like these I don't think it's the stores themselves that causes the poor treatment but just the nature of some people to be mean and others to be nice.
One day I bought a bunch of makeup from a MAC counter in the Bay. The girl was so nice, even though I was pretty unkempt. And even when I decided to buy a few of the products at another MAC store (because they don't sell the eye shadows in pallette format at counters) she was great about it and gave me one of those makeup cards so it would be easy for me to pick them out. Then I go to the Queen street store and they were very short with me. But I've also shopped at Queen street before, and had them be fabulously great. Really it's just a matter of some individuals being crummy and others being not so crummy. Though stores that can afford it should work harder to really search for, not only qualified salespersons, but salespersons who will give only positive impressions on anyone visiting the store, whether prospective big spender, or just browser.
(I think the lady who was short with me at MAC was just having a bad day. It was busy, and I tend to require assistance.)
I think there should be a store policy at some of these places that as a salesperson you are a ... what's the proper word, publice relations person?.... for the company and therefore have to be on the best behaviour. Snotty or negligent attitudes should be criticized sharply. If I want to be neglected, I'll go to a bargain store. I still am really impressed by that first experience in that first shop (what WAS it! If anyone knows the Bloor area, the store that is there NOW is some sort of multi label store, and is just titled with the street number) though perhaps that was a one off.
(on a side note. i stopped by a MAC counter this morning to look at ther long wear lip gloss that I was reading about on their webpage. I put it on my hand, and then when I went to wash it off, the darn thing won't come off! Now i have this smear on my hand, exactly the shape of how I put it on [so no bleeding or spreading of the colour] that won't come off, even hours later. I guess they proved the long lasting bit! Ha ha!)