There is more point to being wealthy if being poor is a likely reality: the wealthier you are, the more insulated you are as well. And you don't have to be a so

There is more point to being wealthy if being poor is a likely reality: the wealthier you are, the more insulated you are as well. And you don't have to be a sociopath either - humans are pretty good at looking away (how often do you look at pictures of starving people?) Also you assume that a person who is good at solving one class of problems is also good at solving other classes of problems. This is not so. Anyway there are solutions that are not hard, but they mostly involve putting these people under guardianship and getting them of the streets, then into assisted living for those with mental issues and some for of work program for those who are just on drugs. The once whoes only issue is that they don't have place to stay need help too, but they are typically not the one you see on the street, because they are sane enough to sleep in cars, behave normally during the day, have a place to shower at a gym or similar, etc. I doubt enough housing could be constructed to help them, as it seems the more housing there is, the more people come there in search of better oppertunities - a potential solution (although diabolical) would be to raise the minimum wage enough that there aren't jobs for the people who can't afford to live there (less diabolically minded people would point out that it would make it more attractive to have a longer commute and that some of the people who are able to maintain their jobs would now be able to afford housing).