The conditions are ripe. A generation of hipsters (I don't say that in a disparaging way) that have a fetish for authenticity, craft skills, and clean living; are also financially stretched to their limits even when sharing houses; have a strong desire to be part of a community in a society that is focused on the individual, and can't afford to create a community the traditional way (i.e. by starting a family). Communes (not necessarily rural) are coming back.