[3rd_gear_Ted]

It all starts with the DGAF mindset. How a person gets there is many faceted. All the public can do is apply Carrots or Sticks.
Based on the supreme court ruling on homelessness at public places, a nation wide standard of personal sleeping space should be established as a 7ft x 3 ft space. Each community would come up with local solutions for their belongings and other transition needs performed by Non-profits that get publicly graded for efficiency. It starts by letting future people sliding toward homelessness know that that's all the public space they can use for sleep and they can't depend on acquiring any items used as a form of street currency that is used support their chosen DGAF lifestyle.
Start with the VETS for their own good