Well, as someone (not rich) who has lived in America most of my life, I would like to point out that not everything you read in Wikipedia is true. This is only an "ideal" - vaunted by America's right-wing conservative christian community.
In reality, many of us are separated from our families. When we graduate high school, many of go away to colleges in different states, far from where we grew up. Once we graduate, if we are lucky enough to find jobs, we may find ourselves living on the other side of the country. We are expected to work long hours, with little time left over for family.
Orphanages - foster homes - believe me, there are plenty.
I cannot fully compare to Russia, because I only lived in Russia a short time in comparison, but from my perspective it seemed that Russians, often living in multigenerational homes, are much more family oriented (in reality) than Americans are.