I am completely behind the idea and would work full time on it (if I had my time for myself) but all such documents or sites are all talk and no code and it's getting tiring.

I get that they want to inspire, to show data backing up the idea that people are open to that software model, and in general to give hope and inform but... I am getting way too cynical and I can't help but wonder if actually writing a tool that builds the foundations of such a movement wouldn't have been a time better spent?

I mean, at what point will somebody do something about it? And does it have to be your average overworked programmer who is sacrificing their scarce free time? When will one of these organizations that periodically toot their own horn about much they care, will hire several hardcore programmers to do something?

Have you seen Kleppmann's automerge library? https://github.com/automerge/automerge