You run into all kinds of hard and soft limits when you have thousands of instances. The other thing to think about is scaling for people. Do you really want 1

You run into all kinds of hard and soft limits when you have thousands of instances. The other thing to think about is scaling for people. Do you really want 100+ teams in one account? What about cost tracking ? Etc etc. Lots of reasons to have an account per team, or ideally, an account per service.