I don't understand where git's distributed nature comes into play here. Perforce is fully centralized, and it also doesn't have any limits to repo size - as long as you have enough disk, P4 will handle it.
In fact, Git's distributed nature actually makes it infamously bad at scaling with repo size - since it requires every "participant" in a repo to have a copy of the entire repo before they can start any work on it.
In fact, Git's distributed nature actually makes it infamously bad at scaling with repo size - since it requires every "participant" in a repo to have a copy of the entire repo before they can start any work on it.