I wonder whether an alternative could be like a Reddit or mastodon with paid-for subreddits/servers (not familiar with mastodon) being able to be started like a

I wonder whether an alternative could be like a Reddit or mastodon with paid-for subreddits/servers (not familiar with mastodon) being able to be started like a colocation service ala linode. Ie customers just sign up and the backend provisions them infra as needed. That seems like a way to answer the “nobody wants to run their own server” problem.