First up, so it’s clear, I actually agree with you. But I also don’t think this is an easy thing.

If you’re aware of public and social housing then why are you asking how community ownership and management works?

Because there is a hiccup in your logic as far as I can discern it.

On the one hand you say: “of course all rental housing should be publicly owned.”

And on the other, “I’m not certain that all housing should be public”

So how does that work?

1. How does the housing become public? That’s trillions of dollars worth of property. I actually got the figure of US$7 quadrillion but I don’t believe it. What’s more, 70% of the 19.3 million rental properties in the US are owned by individual investors, meaning you’d have to either confiscate or buy from millions of individuals. I mean, it wouldn’t make sense to just build all this housing if it’s already there. Maybe a combination? But where on earth does that money come from? And how do you convince people invested in a $1.4 trillion market to give up that income?
2. So let’s say somehow #1 happens over some period of time. How then do you meet ongoing demand? I get what your saying - there are examples of this working (for some values of “work”) on a small scale but over the entire rental market?
3. If the public via governments has paid for all this housing at current prices, how do we then ensure rents are low? Over time yes, we can forgo all but the bare minimum rent increases to match inflation, but initially we have to foot the bill somehow. Because presumably that money has to be borrowed and we have to pay interest on it on top of ongoing maintenance, etc - there are real costs involved.