Re: Doesn't surprise me
Google are a notable example of this. They store everything, literally everything*, in a single repo that started life as a p4 repo. These days it's built on homebrewed tech, but looks/feels similar. They do it for a different reason though; they think a monorepo all but eliminates dependency and versioning overheads.
*Billions of lines of code, documentation, config etc for very nearly every project and product they've got.