I see your bullshit and raise you horse manure. Speaking from an administrative point out view, it is indeed harder to run a program like that spread out over a much larger area with a much larger population to deal with. A complication in the US is also in differing state laws. This probably wouldn't work EU-wide either.
Also Finland didn't start from a large pool of homeless people due to mental illness or medical bankruptcies because there were other social safety nets spun before this one to catch a lot of the people before they became homeless.
Blame the US for not trying. I do too. But "economies of scale" are not going to help a program that for it to run well cannot be run like a business.
How can anyone answer this unless you vaguely doxx yourself?