I agree that it is normal for mom and pop shops. It is also normal for pre-modern dynamics: tribal (hunter-gatherer), family farms, etc, though the case can be

I agree that it is normal for mom and pop shops. It is also normal for pre-modern dynamics: tribal (hunter-gatherer), family farms, etc, though the case can be made that there is some physical separation. I've also seen co-living/co-working spaces where couples live and work with other family groups within the same building. However, I also think that the Millennial generation did not generally grow up with this. Remote work also adds a different dimension too, if each partner of the couple are working with different teams remotely, rather than working together, and each partner does not have visibility into what the other partner is doing all day.