Give every person:
- a "capsule"-style room (2m x 1m x 1m)
- a set of merino wool clothes (washed weekly)
- a pair of shoes
- a meal a day (1500 calories, high fat, low carb)
- unlimited drinkable water
- a weekly body maintenance (shower, nail clipping, hair trimming, mouth cleaning, ...)
- a bi-annual physical exam (weight, urine analysis, blood analysis, scan, eye exam, ...)
- a portable computer / tablet / VR headset (on demand)
- access to public spaces (indoor and outdoor)
Basically, this would cost a person about $200/month (all included). You would own nothing, but also have nothing to maintain or worry about (other than your mind).
The ONLY thing that stops this from happening, is the government and its regulations.