Don’t have time to dig deep into it this afternoon, but want to comment to come back but also to suggest an expansion past your stated “one personal and one company” wiki.

I lead two different functional areas within tech and work in a larger tech platform for the parent company of a couple dozen operating companies.

All that to say “I would almost surely be better served by a hierarchy or general graph of wikis rather than just ‘me’ or ‘all 15K employees’.”

Even a 50 person company might benefit from “me”, “my team”, “my department”, and “whole company”.