Ok, but how large does the organization need to be for that to make sense, or how do you determine that? I was recently brainstorming some ideas with a friend

Ok, but how large does the organization need to be for that to make sense, or how do you determine that? I was recently brainstorming some ideas with a friend who has a 1-person business where it would make sense for clients to be able to connect with each other. The thought of Mastodon briefly crossed my mind, but it seemed too ambitious.