Those houses were built by state-backed actors to support growing urbanization and create a housing surplus for that urbanization to give the workers more power since they no longer have to deal with aggressively rent-seeking private landlords.
Wait, isn’t that communism?
No, that’s a welfare state
Welfare state would be if the state took over half the rent payments, for example. Building more houses, that are not owned by the government is examplatory of a planned economy and the aspect of doing it to give more negotiating power to the average worker is a communistic idea.
No they weren’t built to give “the workers more power”. You still have landlords and sometimes hefty prices on these apartments. Depending on the country/city.
Excess housing supply doesn’t commoditize housing and give working-class people more choice? Hmm…