I mean it's like any real world thing, potentially non profit. A group of people elected to run public services for everyone else which people pay a fair amount to use. Something that's constantly reviewed, where new members can join and others can move on.

Yes, on a small scale, but they do exist! Just look up at Riseup, Disroot weho.st, or Autistici/Inventati.

Thanks for pointing those out. I think it could be done on a larger scale but only with buy in from the community and starting with one or two specific services e.g email or app infrastructure.