Exactly. It's a common mistake to think of 'dev teams' as being distinct from each other. In open source, that can't really happen. Anybody can contribute to multiple projects simultaneously and I can, without your consent, copy your open source code into mine. In open source, there will always be (at least) one repository that has the best code. And therefore, as it's the best code, there is no need for duplicate repositories and therefore there will be just one repository. This *appears* centralized, but it's not.