The last landlord I had was a decent fellow - the property was well maintained and he fixed problems promptly. But my rent certainly went to pay his mortgage on the property, and I now have nothing to show for the $thousands I paid him. One time he was showing off the little 8-unit complex to someone he wanted to go into a partnership on another property with him.
My cousin has a few low-end houses that he rents out. He's jokingly referred to himself as a "slumlord", but... rent is what economically strangles his renters.
My grandparents owned both their homes free-and-clear, and stayed in their homes for 40-50 years. This is the hope of anyone who buys a house: independence from the landlord & bank.
The cooperative I'm envisioning would channel rent payments into a fund. After long enough, you'd be able to live there for just maintenance costs, or you could "work off" the monthly fee by contributing somehow. And if a person moves out of the coop, their "equity" could be returned to them over time... Or something like that.
(minor edit on 'work off')