By definition rental accommodation has always had a landlord, be that he council, the local HA, someone with the foresight to buy-to-let. Before council housing, your employer used to provide housing, so you were (unfortunately) tied to them - farm cottages, railway workers, mill workers, factory workers.
En masse state owned housing is a relatively new concept, its a post war phenomenon. RTB exacerbated the problem lingering from the 1970's, councils haven't been building housing since then.
The problem isn't in who the landlord is, it's the fact everyone wants to live in the same place. I could take you to swathes of empty cheap housing in the North of England, but no one wants to move to where there is no infrastructure, no industry, no employment, lack of schools choice. This unfortunately bumps up the prices in the South, which is unfortunate for us who are born and bred down here as we have to compete with migrants from all over the country (and elsewhere) coming to the more affluent areas in search of work.
I work with DV and homelessness, it's not as clear cut you would like to think. Social issues occur no matter who the landlord is.
[[http://fet.uwe.ac.uk/conweb/house_ages/council_housing/print.htm]]