The model in Vienna is simple. For over a hundred years, they have been building non-market housing, mostly public housing, but also private housing. But their profit is limited to 5% per year. And not only are rents super low in that housing, which is about 60% of the housing in Vienna, private rental and even private ownership is also super low because there are choices available. So it is possible in the real world to see systems where housing is affordable, where cities are super livable, because if you aren t spending 50 or 70% of your income on housing, you can spend it on dinners out and culture, and go on vacation and even invest in retirement funds that don t involve evicting people.