I dont think housing being a commodity has anything to do with this problem more than scarcity of homeless shelters. But if you made it easier to own a home for the unfortunate, we will likely see the same outcomes. Other countries like Britain or France have decommodified housing and they still have a sizable homeless population.
If you give the individuals who reject rules a luxury of owning a home, the only thing being solved is the eye sore by having certain people moved out of public view. The rest frankly just like being in the environment.