I work at Tlon (the main startup behind urbit, so disclaimer) - it's a lot easier to use urbit now than it used to be thanks to free hosting.
It needs to be a lot easier still (particularly the mobile experience isn't there yet without a fully formed app), but if it's been a while it's worth checking out again: https://tlon.io/
It'll be insanely hard to actually pull off, but it's the only attempt in this space that I think has a legitimate chance of a successful outcome. The others are dead on arrival because they don't actually fix the underlying issues. (Success being widespread adoption of software the users actually own and control.)
I personally self-host mine which has also gotten a lot easier too: https://martiancomputing.substack.com/p/product-review-nativ...
The UX needs to be just as good as a centralized service - I think urbit is the only design where that's really plausible (without recentralizing).
