You act as if everyone does their job perfectly. I used to work at a pizza place back in the day. When it first opened, it was amazing. Ran like a charm. Years later, after the OG owner passed it down, things started declining. Things weren't done with the same quality. Product suffered. But the restaurant was still successful. But things were breaking down internally. Recipe was being lazily put together instead of exact measurements, it became "close enough".

Eventually the restaurant closed. Not because people didn't know how to run the restaurant, but because complacency set in. Avg quality became the norm. This is what's happening with most of our infrastructure. People still know how to run things. But avg preformance is becoming the norm. It will turn out badly.