7. The root problem is the monetization of housing.
For centuries, even thousands of years, the purpose of a house was to provide shelter for a family group. You built it and lived in it, and passed it along to those that followed.
Then we invented home financing, where bankers make more money than builders from the same house.
Where people are told that their home is not a shelter, but a financial asset to borrow money against. The money and interest paid back suck money out of the rest of the economy.
Where people are told that they must obtain larger and more expensive housing by trading their old houses and taking out ever-larger loans. This means that bankers make multiples more than builders.
Then, when housing can't be paid for, the families are evicted, and the properties are bundled into other financial transactions, making more money for banks and financial gamblers and hedgers.
So you end up not with communities made up of family-owned, generationally-passed shelters, and people free to spend their money for real things, not interest and fees, but instead a landscape of shadow entities propelled by interest and fees, "protected" by hedges and US government guarantees to banks, while real people have no place to live, because they do not have the entry ticket.
One ticket used to be enough for generations, now each family needs many tickets during a single life to try to stay covered. Any accident, bump, or glitch, and families are out. Banks win either way, and so millions of perfectly good housing units stand empty while millions of perfectly good people are homeless.
Homes are not and never were intended to be investments nor financial tools of any kind. They keep you covered from the weather and safe from environmental intrusion. That's all.