But what would your disaster recovery process look like?
You’re responsible for 1000 Git repositories used by developers all over your department. Some (or even all) of those have just been wiped in a ransomware attack.
Whom are you going to tell to `git clone` what from where?
DVCS is designed to propagate code to many people and allow them to easily modify and share with others who also have a copy. If people don't have a copy they can get a copy of a copy (which at some point may have been modified). In a large company you need a Single source of centralized truth. You cannot build a company on the concept of "it works on my dev workstation" or the worse suggestion here "all the company's IP source code is on only on my dev workstation".