It's worth considering that some of us want to rent. I've moved for work a few times, so I rented because it wasn't worth the hassle of buying a house, living in it for 2 years, then selling it to move. Some people move to a big city to start a career, with the intentions of moving back towards home when they've cut their teeth.
Having the option to rent is a good thing, being forced to rent when you don't want to is a bad thing. Hopefully we can accommodate both.
It depends on what facilities the country would provide. Assuming it's USA it's homelessness. If it was another country, it might be provided social housing.