You will see Indian families, or even Caribbean families live 2 to 3 families deep on one household.
It's also this taboo thing where we kick our children out at 18 or living at home after a certain age is a bad thing.
Truth is, if you have an uncle, sister, cousin etc... that could live in the household and contribute it's a better deal.

My family lived in my great aunt's upstairs for two years when I was little. We paid rent and bought food for the whole house.
It was a shared space and actually the most memorable experience of my childhood. I loved living with my family.