That would be difficult (impossible?) to prove. But if the claim is not true, a much easier thing would be to show an example of a large enterprise which did no

That would be difficult (impossible?) to prove. But if the claim is not true, a much easier thing would be to show an example of a large enterprise which did not introduce distributed processing. Is there one? I've not heard of that. Even basics like auth eventually require SSO if you want to preserve your sanity, and that's a distributed system.