> That would mean a much smaller house, much less technology, a very cheap car or public transit, vanilla food, only a few suits of clothes, and bare bones health care.

I'm not too far from this, 30 square meter apartment, no car, make most of my own meals, have only a few inexpensive clothing and don't have private insurance (because universal healthcare is better). I have a fair bit of technology but that barely makes a dent in my overall budget, in the last couple of years it's just the internet and the electricity to run them.

10 hours a week (assuming I could get divide my current salary by 4) would barely pay the mortgage/rent due to inflated housing costs. With 20 hours I could pay food/water/electricity and probably have enough left over for some indulgences.

So this is feasible for me, but I just creep into top 10% income bracket in my country, it's definitely not achievable for most people.