> That reminds of how Salt Lake City recently found out the same thing with its success in curing homelessness. The problem never ends.
It's funny that you mention Salt Lake City, because that example is commonly misunderstood and actually illustrates the exact opposite of what you're pointing out.
Utah set out to solve chronic homelessness. The causes and effects of chronic homelessness are completely different from transient or episodic homelessness, and the three require different approaches. Utah eliminated 91% of chronic homelessness within ten years, using a Housing First policy. After they ended the policy, total (not chronic) homelessness increased. The majority of that increase was from non-chronic homelessness, which was not targeted by their policy and which was increasing even before that policy ended (because it was, well, independent of a policy that was... not aimed at addressing it). Chronic homelessness has increased in Utah since the end of the program in 2015, but the overwhelming majority of homelessness that's reported on in Utah is still not chronic homelessness, because chronic homelessness makes up less than 20% of the homeless population.
It's odd to look at that as "the problem never ends", because the problem (chronic homelessness), did very nearly end, until the state decided to end the program and go back to their own ways.