We say "at McDonalds" or "at Starbucks" because these places have a sort of casual ubiquity that's inserted them into our daily lives. We say "at the Apple store" because that's what feels right based its place in our daily experience.
A marketing guy trying to goad us into giving the Apple store that same casual ubiquity without "earning" it just by dropping some leather couches and potted plants into a store is pretentious. It feels wrong and we know it in an uncanny valley sort of way.
I don't think I can reach those heights. (Remember those Mac vs PC commercials? You can't get much more uppity than that.)
Do a good enough job creating an inviting public space, that people frequent, then yes, I think it's a reasonable goal to say, "Let's meet at Apple" - you've got to aspire to something, and that seems like a pretty worthwhile goal.
I'll never meet anybody "at Apple". I may meet them at an Apple store but if anyone says the words "at Apple" then the meeting is off because I never want to speak to you again.