Something I came across yesterday was OpenCloud. I think with many of these small projects being funded it's not clear there's a cohesive vision of how to reclaim the internet. I mean the browser itself is owned by big tech. I don't know whether you have to start again at the protocol level.

https://opencloud.eu/en

Edit: if I was to dig a little deeper. What you do need is an operating system for the cloud. Something anyone can run and adapt. With a clear service to service protocol (not http or grpc) and a base set of services that make it useful. Things like proton are nice and we can support them and they run and manage the service. But if you wanted to run that stack yourself, you couldn't. I don't think it's entirely open source. I don't think that's their goal, but you also just couldn't run it yourself. We need this sort of default open model while having a cohesive strategy around how you build something. That is a true alternative to big tech and cloud providers. We are nowhere close to that.