I did state that if the capital required for the development wasn’t levered (borrowed from financial institution) then they obtained their capital through exploitation directly or otherwise.
Your argument about landlords being benefactors is compelling but landlords come in many different scales. From do well tradesmen who possess the skills to develop a property leveraging their own skilled labour and knowledge to offer the rental service to multinational reits that buy up property en masse and are the evil you speak of lol.
The system is flawed. We know capitalism funnels money upward your argument is valid but ignores that some individual / independent landlords are still people who may well be exploited every other step along the way.