100 years ago most people that had any semblance of middle class status had live-in servants. Servants got room & board and a pittance for pay and were better off than many many others in a day and age without entitlements or safety nets. Also, 100 years ago, anyone with a room to spare took in boarders to earn a little extra cash. Our modern concepts of privacy and space hadn’t taken hold yet. Such systems could work again.
I haven’t read the whole thread, but my parents lived through the Depression. A retired, single teacher had lost all her savings in a bank failure. She came to live with my grandparents as their cook and housekeeper–room, board, and $5 per week (not bad for the time.) It worked for all of them. I agree that privacy and space are recent western concepts, still not reality in most areas of the world.