It's like how Git is decentralized. Yes, it is indeed decentralized and that has enabled a lot of interop (eg. git push heroku) but for anything public, people

It's like how Git is decentralized. Yes, it is indeed decentralized and that has enabled a lot of interop (eg. git push heroku) but for anything public, people want a nice way to view code, have the README front and center, etc. so they often prefer their main datastore be GitHub or GitLab. It helps that they do some maintenance automatically for you, eg. garbage collection and effectively guaranteeing you won't lose data (besides when the services break and it's down for $x hours).