[pjc50]

People do not want to live on the streets in tents. Tents are just not suitable for permanent life even at the latitude of San Francisco.

The UK and Ireland have the "traveller" community. They are basically non-Roma gypsies, the descendants of nomadic Irish tinkers. Even they do not live in tents. They live in caravans. A few still have the traditional wooden painted horse-drawn ones, although generally those only appear for special occasions like funerals. Mostly it's modern caravans and motorhomes.

There used to be fields provided for them on the edge of towns, but the inevitable social conflicts have caused those to be reduced to almost no provision.