Comment by abracadaniel

A potential difference I see is that when internal tools break, you generally have people with a full mental model of the tool who can take manual intervention. Of course, that fails when you lay off the only people with that knowledge, which leads to the cycle of “let’s just rewrite it, the old code is awful”. With AI it seems like your starting point is that failure mode of a lack of knowledge and a mental model of the tool.