Then you'd go bankrupt and stop supporting your "so much" housing, unless you'd gift it to those people, not give as a temporary service.

Bamboo - a nice idea. Actually I'm not sure it's that hard for you to do even now. I'm serious, if you know the pipeline, then try to evaluate how much a start would cost (for it to be barely profitable). You need, well, bamboo itself (grows like a virus, shouldn't be a problem), and on the process of making stuff from bamboo I'm not sure (I think it involves making some kind of pulp and then pressure?..), but humans do this kind of thing. Should probably start with dishes and cups.