I agree with everything you wrote.

You are overlooking a blind spot, that is increasingly becoming a weakness for devs. You assume that businesses care that their software actually works. It sounds crazy from the dev side but they really don't. As long as cash keeps hitting accounts the people in charge MBAs do not care how it gets there and the program to find that out only requires one simple unmistakable algo Money In - money out.

evidence

Spreadsheets. These DSL lite tools are almost universally known to be generally wrong and full of bugs. Yet, the world literally runs on them.

Lowest bidder outsourcing. Its well known that various low cost outsourcing produces non functional or failed projects or projects that limp along for years with nonstop bug stomping. Yet business is booming.

This only works in a very rich empire that is in the collapse/looting phase. Which we are in and will not change. See: History.