@bobhaugen yes I know, but it's possible. I recently visited a community that has existed since 1975 and is not only still going, but still felt lively, and even there were a couple of people in the second generation that still wanted to live there. On the other hand, just down the road there is another community dysfunctional enough to have a vice documentary about it

When you start peeling back the layers and changing things you discover hidden assumptions and problems that the old way was either solving or protecting you from, or at least creating bigger problems so you didn't notice these new smaller problems.
Most of these communities fail. That's actually a good thing, like how most businesses fail.
We want to have lots of little things with some of them failing safely, not one big thing that catastrophically fails. (i.e. global capitalism destroying the enviroment)