Other than Crassus doing this in ancient Rome, when else has this been done?

Something had to be changed, it wasn’t always socialized.

I mean yes in some senses but also there is a reason "bucket brigade" is a term almost everyone knows in english and anyone who doesn't speak english will understand once it starts happening anyways...

If I can run into a crowd of strangers and yell to everyone that it is an emergency and we need a bucket brigade for water buckets... (or really anything other object)... why would the entire crowd most likely know EXACTLY what I was suggesting everyone do so precisely if firefighting has always been a private venture until recently?

I don't think it is an implausible that firefighting (and firestarting for promotion of field habitats) might have been one of the first highly coordinated intellectually sophisticated large group activities conducted by humans, probably not and who could ever say for sure but the point is these are things very deeply woven into us.