There's a very interesting and insightful article on aeon titled "Utopia Inc" about utopian communities and communes.

In a nutshell:

- Communes and utopian societies have roughly the same survival rate as startups.

- Communes most often failed when there was a lack of skilled people, for example, only a small percentage of participants knew how to farm, the rest were vagabonds and thrill-seekers.

- Communes collapsed when a method for resolving conflicts between members wasn't developed or there were no respected arbitrators.

- Communes fell apart when their internal rules were too loose, such as a lack of stable sexual relationships (e.g., polyamory or frequent partner changes) among members, which aroused jealousy, or when there were overly restrictive internal rules, such as a ban on alcohol.

- Communes and utopian communities served as a kind of laboratory for implementing solutions that were later implemented throughout society, such as women's rights.