The DSL described in this post really resonates with me. I recently worked on a programming language that uses similar structures [0]. It lets the user define entities and their shape (Role, OrganisationalUnit, Person in this post) and entries for those entities. It contains a small scripting API that can be used to derive information from these "facts". Company as code could definitely be implemented on top of this.

[0] https://thalo.rejot.dev/blog/plain-text-knowledge-management