To be clear, I am not saying to you, "you must do this yourself".
I am only saying, the source code of these platforms are resources that anyone can use.
There will be many different ways of owning/paying/maintaining. There will be many kaupapa (purpose and process), some you will agree with and some you won't.
But, spread the word that the resources are here for us all. You and I might not have the energy but we probably know groups who would.
You are in Canada on lemmy.ca and helping to support smorks, I am in Aotearoa reading your words through kbin.social and I donate to kbin's dev, Ernest. It's wonderful that we can have this conversation across platforms like this. I think great things will happen.