Plenty of businesses or products within businesses stagnate and fail because their software got too expensive to maintain and extend. Not infrequently, this happens before it even sees a public release. Any business that can't draw startup-type levels of investment to throw effectively infinite amounts of Other People's Money at those kinds of problems, risks that end if they allow their software to get too messed-up.

The "who gives a shit, we'll just rewrite it at 100x the cost" approach to quality is very particular to the software startup business model, and doesn't work elsewhere.