It's pretty common. There's the extreme end like Uber (>3000 microservices) and countless cargo culting startups (I see a few dozen microservices for a team of

It's pretty common. There's the extreme end like Uber (>3000 microservices) and countless cargo culting startups (I see a few dozen microservices for a team of half a dozen or fewer engineers in the wild frequently, which is big enough to desire cross-repo refactoring) but the 800 pound gorillas like Microsoft, Amazon, Apple, Facebook, etc. are at that scale by necessity. I doubt however that anyone is doing any sort of refactoring that touches a significant fraction of those and if they do, it's an organized manual team effort. Microservices didn't become popular because the code could naturally be refactored that way, but because they enforced an interface boundary that worked better for mid to large sized organizations with multiple teams of engineers and levels of management where the communication overhead is much higher.