That does sound like a great model. Reading between the lines gets at what I was insinuating, too. Vienna built a lot of housing in good places. If walkable cities are expensive, it’s because they’re in high demand. We can lower the cost by making more of them.
Absolutely, much more housing is definitely needed. Not-for-profit housing already exists in the US, but there’s very little of it. Not-for-profit housing units fill up very fast because they are usually less expensive, and once in the units, tenants tend to want to stay. This leads to long waiting lists for the limited Not-for-profit housing that already exists. Much, much more must be built. Changing restrictive zoning laws should help this, but I think federal and state governments are going to have to get involved as well, providing financing or subsidizing financing for Not-for-profit housing organizations to build or acquire properties.