The foundation of all this is 'ownership' of land. As you say, it's systemic - and as long as there's 'ownership' of land, it is systemically impossible to end 'land-lording'. Because if anyone 'owns' land, all land has to be 'owned' by some person or entity. 'Commons' cannot coexist with 'privatization'. All land being 'owned' means that some people don't 'own' land. Those who don't 'own' land are systemically forced to make some kind of deal with those who do in order to have someplace to dwell (or to operate a business, produce food, etc. - any activity that requires some physical space to carry out, which is pretty much everything).

A 'nonprofit' is irrelevant, since it is simply a legal form of indirect-client business that is as fully implicated in 'ownership' as any other entity. It has to generate a surplus ('profit') to continue to exist in a profit-based system. That the 'profit' can't be given to a few private individuals doesn't change anything about 'ownership' or 'profit' or the rest of the system.

Oh yeah, and then there's the overpopulation issue...