Couples with high income, inheritance, people who live on credit and debt, &c.
Not many can afford a new house with a single income, let alone to support a family with kids, maybe not 1% earners but definitely around 10%. A friend of mine has kids, they spend 60% of their household income on the flat they rent (2 salaries, both a good 20% above average for the city), that's before the car, heating, electricity, kids spendings, food, &c. and they're already one hour away from the city center by train
There isn't much up for debate I'm afraid:
https://assets.bwbx.io/images/users/iqjWHBFdfxIU/ifomkf25BuW...
https://fred.stlouisfed.org/graph/fredgraph.png?id=QDEN628BI...
https://www.statista.com/graphic/1/416207/average-annual-wag...
https://www.researchgate.net/profile/Carlo-Jaeger/publicatio...
https://www.move.org/app/uploads/2020/04/Home-price-changes-...