> At this point I hadn't realised that finding who is responsible for something in a large organisation is very much not straightforward.

This resonated strongly with me. Last time I worked in an Enterprise shop, I happened to inherit the approval system - every app in the entire org, whether an internal app or from a vendor, got configured into this home-grown monstrosity of an access approval system. It actually worked well despite being made of spaghetti, but one side effect of being the tech owner was that I knew exactly who was in charge of every system in the organization. At some point I realized that my success there was at least partially due to being the human who knew how to connect all the dots, because when someone needed such info, the answer for the entire org was, "Ask Dave."

That’s because denial of responsibility is one of purposes of enterprises. It’s not an accidental byproduct.

I did a contract at an airline. I was tasked with figuring out why the barcodes a new system was generating weren't scanning. I never did find a person still working there who knew what was wrong, but by sheer persistence I finally found an old email someone had saved a copy o to their space on the company SharePoint. The problem turned out to be the wrong kind of cryptographic signature on content.