That statement is the problem.
Nobody wants to rent. There are too many rental properties, and not enough affordable housing. The reason you need rental properties is because you're already trying to make a living from families having a home. You're not supposed to do that. That's supposed to be the prize for the family for assimilating with capitalism. By buying it and renting it back to them you're disincentivizing the working class from working.
But by all means, keep privatizing the shit out of 3 bedroom family homes and see what happens. Take every drop of value out of the housing market and bank it. That's what pitchforks are for.