>At a certain scale, it's often a lot easier to build one system that solves all the problems.

I have been wondering, are you familiar with Project Xanadu and Ted Nelson's work in general? Project Xanadu took a "whole cow" approach to building a network centered around publishing documents and linking between them. The stated goals for Urbit and Xanadu seem to overlap [1] enough that Xanadu would be easier to implement on top of Urbit than on top of anything else. It could then be Urbit's superior alternative to the World Wide Web for publishing hypertext documents. Last year I emailed Nelson asking whether he knew about Urbit (secretly hoping he might already be working with or for you) but he replied he didn't.

[1] https://en.wikipedia.org/wiki/Project_Xanadu#Original_17_rul...