Disclaimer: I wrote this article and made this website.
There was some talk of this issue in the recent fediverse inefficiencies thread. I’m hopeful that in the future we’ll have a decentralized solution for file hosting but for now I deeply believe that users should pay for their own file hosting.
Is file hosting really a must? I mean Reddit and feddit are basically forums. And not many forums allow file uploads. Also, we should have retention limits. Low value posts are allowed to fade away. High value posts that have some level of interaction stay alive longer.