Look up boarding houses and start building them. It’s a 19th century concept that worked fine for Americans.
You get a bedroom and two square meals each day - breakfast and dinner. There’s a community room to smoke cigars, sip cognac and follow your favorite sports team. And it won’t cost $2,000 a month.
Boarding houses as you described won't work anymore. They required people to be civilized, be polite and have some manners.
I’d bet that today there would be permitting and insurance requirements to run a boardinghouse that no one in the 19th century could have imagined.
In my impecunious younger days, I had to live with quite a variety of roommates at different times. I expect to see a lot more residence-sharing and informal cooperative situations happening in the coming years.
Look up boarding houses and start building them. It’s a 19th century concept that worked fine for Americans.