Let’s assume being a landlord is made illegal overnight. Tenants won’t be made to leave their homes, however, until the landlord has been able to sell up.

I mean obviously we're not going to abolish landlords overnight unless we abolish a whole lot of other things along with them in some kind of incredibly successful revolution, but thinking that we'd keep them around long enough to profit from the sale of their real estate assets is just a failure of imagination. Let's assume that all mortgage debt is cancelled and ownership of every dwelling is granted to whoever's been living in it.