Money certainly is a driver. I live in an area where some folks have live in household staff, private airplanes and summer homes in the Hamptons.
Not all neighbors are that wealthy- there are plenty of “normal” upper middle class folks - you know, families with two professional parents making reasonable bank but still living a W2 life.
In general, the neighborhood expects its kids to attend college. NOT attending college is a weird choice, but it happens because not all kids should attend. But the starting point is assumed to be college.
There is a family around the corner in a typical 3-bedroom suburban home. There are 6 kids; 4 are college age. All of them either go to an Ivy or a near Ivy (3 of 4 at an Ivy.) The grandparents pay.
I’ve worked out with the mom of the family before and she’s probably the most unhappiest person I’ve ever met. I stopped working out with her because our conversations were never light and cheery (I tried) but rather a long bitter complaint-festsand I decided we weren’t close enough friends for me to hear that level of unhappiness on a regular basis. The kids are successful but I’d not place $1 on their happiness. I do hope they find it in college, because I don’t think that house is a happy one.
Anyway, I go with $ over genetics. I don’t buy into genetics as the magic ticket. I see $ as the answer. Yeah, the pool of parents may be self selecting but it’s a rich person’s world they are selecting into. Having $ allows those families to provide experiences and access that most families are excluded from- I see this in how my own kids interact with their friends. They are sometimes surprised by their friends’ smaller world views as they haven’t had similar experiences in life.
(As full pay not rich parents, we had our kids chase merit so they aren’t at an Ivy or near Ivy. Neither kid seems to be harmed by their choices.)