A lot of the things we do on a daily or weekly basis have ways of doing them that can either be private or communal, some of these which we do not think to consider as having that characteristic.
For example, bathing in the Roman Empire used to be communal, but then Rome fell and citizens in the splinter countries began taking baths privately.
Receiving mail is another example. There are countries which don’t have mailboxes and everyone gets their mail at the post office in the PO boxes. It was the United States which pioneered the idea of the modern mail system, which is why we associate it as a private act.
There are activities as well which don’t have any history as jumping between one or the other that might benefit from it, for example I think towns might benefit if internet was free and freely accessible but only at the local library.
What’s a non-communal aspect of life you think should be communal?
Community canneries still exist, but they used to be way more popular. In rural communities where people grow a lot of their own food, people can their own food, but pressure canners take a lot of time for a single batch to come up to pressure, cook, and cool.
Community canneries have much bigger pressure canners where you could feasibly can everything in one batch. It’s also really enables people sharing surpluses, trading, etc.
Many hobbies are better shared, too. If you have 20 people sharing a super high quality “item”, they will have a better experience than if each of those people had to buy their own crappy versions.
Basically, a whole lot of things can be “libraried”.