@lewiscowles1986 @hrefna @Azuaron @aredridel landlords are fundamentally capatalist. Their ability to perform that role derives from property right (capital, and thus covered under OPs definition).
Their harm is a matter of scale, and while someone renting out their single spare unit is not what's creating the housing crisis, the decision to keep the property under ownership and rent it out is still hoarding living space for profit, driving up prices.