Just look at Google. Wow! There’s gotta be some baked-in inefficiency right there. And by “some” I mean “loads”.https://twitter.com/lproven/status/1129061406182125574 …
I assume that's to a good way just due to imported code / accounting of that. They have vendored many versions of linux (server, desktop, android, and then several major releases for each), most linux system libraries, several compilers, different OS databases, ...