no. it’s to enforce the rules on the train. there are some homeless that will refuse government provided housing no matter what.

That's just not true. The problem is that government housing is so terrible that sleeping on the street is preferable to some. Public housing in Austria is high quality, cheap and plentiful, with two-thirds of Viennese residents living in it. Coincidentally, homelessness is a non-issue in Austria compared to the US (based on my experience living in the Bay for 10 and in Austria for 20 years).

See this video for what government provided housing could be. https://www.youtube.com/watch?v=d6DBKoWbtjE

Looks like one development you need to be super connected to get into…

Again, 2/3rds of Vienna lives in things like those. The City of Vienna is the largest landlord in all of Europe.

Better things are possible if we stop standing in the way with selfish cynicism.