Sure, it's no different than anywhere else.
Rich people hang with rich people.
It's not even necessarily because they are intentionally shunning poor folk always... but simply because they have the money to go do things together that poorer people cannot.
For all their talk of being "different" from the world because of some special brotherhood, Witnesses are just like anyone else.
When my wife and I first got married, we ended up getting an apartment that happened to be on the edge of the territory of a Kingdom Hall in the wealthiest part of town. Our apartment wasn't expensive, it was tiny, and we were really really poor, but we ended up going to the wealthiest hall in town.
We went there 9 months, and never made a single friend. Not even an aquaitance. Not even a second dinner invite.
We'd pull up in our 1989 Ford Crown Victoria in a parking lot full of brand new 2000 Porche's, BMW's, expensive SUVs, and we just didn't fit in. They'd all go do these rediculously lavish things on the weekend... we'd be in servece and they'd say "oh hey we're all kicking in and taking out a yacht this weekend, it's only 500 bucks a person, do you want to go?" and of course we had to say "um now we can't afford that" and so they'd drop us off at the Kingdom Hall after service and go to expensive lunches or out on their yachts or whatever.
After a couple of times of that they didn't even ask us or really waste time talking to us anymore. We couldn't afford to run in their social circle.