It seems there’s a lot more availability of collaborative text editing features in SaaS apps I think due to the availability of convergent rich text data structures. Those seem to have democratized that specific feature. But I don’t see “local-first” with user-owned data or true decentralized apps being successful as businesses yet.
That repo is long abandoned https://github.com/gritzko/swarm
Did CRDTs and local-first advance much since 2014? There is a bunch of research, way more CRDT libs on GitHub, but (somewhat) successful businesses you can count on one hand.
I guess, that is the actual challenge - figure out the business model.