How do you picture it being decentralized but not self hosted? Self hosting was my first thought and I can’t think of a way to keep it from being centralized un

How do you picture it being decentralized but not self hosted? Self hosting was my first thought and I can’t think of a way to keep it from being centralized under an organization’s control without at least having it as a simple to setup Heroku or Digital Ocean app. Edit: honest question too, I can’t think of any other way you’d do it.