I wonder about this as well. I am an only child and my parents live abroad. They do live near my dad’s siblings and the rest of the family. They are in their 60s and financially are in a good place. They have pensions and real estate and money stashed away. I guess if Dad predeceased then Mom would move up here.
I would hope that they wind up like my grandma who is in her late 80s at this point. She lives in her own home with four uncles and aunts who live within a five minute walk from her home and the rest of her children living within a one hour drive.
She is in very good health and makes the trip to visit the kids who live in the city regularly. She still cooks for herself and the rest of the family and runs her house fairly well.