I did some back-of-the-enveloping once, and I agree. Land acquisition and building are already pretty expensive, and then there's staff + maintenance + utilitie

I did some back-of-the-enveloping once, and I agree. Land acquisition and building are already pretty expensive, and then there's staff + maintenance + utilities over time. I think the strategy is do it in a couple of prominent areas, and, assuming it actually works out, point to them as success stories and acquire philanthropic funding to keep doing it in more and more cities.