Theoretically yes. Practically, no. Homelessness in rich countries is largely
a result of substance abuse and underlying personality disorders (which are often the reason the substance abuse starts).
Modern governments don't have the political will to break the social taboos necessary to instill discipline and personal responsibility in the homeless population, especially when there are large interest groups in the public sector who stand to lose financially from any serious effort to address the underlying causes of homelessness, especially if that effort rejects their ideological assumptions about the causes of homelessness.
Modern governments don't have the political will to break the social taboos necessary to instill discipline and personal responsibility in the homeless population, especially when there are large interest groups in the public sector who stand to lose financially from any serious effort to address the underlying causes of homelessness, especially if that effort rejects their ideological assumptions about the causes of homelessness.